fix: support multiline descriptions

[shenbenson]

Changes are verified through the added test and a manual diff of the before and after wallet-platform.yaml

Partial diff output:

...
1124c1159,1194
<                   description: The permissions granted by this access token. - `all` - Access all actions in the test environment. - `crypto_compare` - Call CryptoCompare API. - `enterprise_manage_all` - Manage users and settings for any enterprise to which the user belongs. - `enterprise_view_all` - View any enterprise to which the user belongs. - `metamask_institutional` - [DEPRECATED] Enables using BitGo wallets in the MetaMask Institutional extension. - `openid` - Verify your BitGo user ID using OpenID Connect. - `pending_approval_update` - Approve or reject pending actions that require approval to proceed. - `portfolio_view` - [DEPRECATED] Call the Portfolio API. - `profile` - View your BitGo Profile. - `settlement_network_read` - View your client's Go Network data, enabling allocations to and from your platform. Only for Go Network partners. - `settlement_network_write` - Update your client's Go Network data, enabling allocations to and from your platform. Only for Go Network partners. - `trade_trade` - Initiate trades. - `trade_view` - View trades. - `wallet_approve` - Approve policies and transactions for a wallet where the user is a wallet admin. - `wallet_approve_all` - Approve transactions for any wallet where the user is a wallet admin within any enterprise to which the user belongs. - `wallet_approve_enterprise` - Approve transactions for any wallet where the user is a wallet admin within a single enterprise. - `wallet_create` - Create wallets. - `wallet_edit` - Edit comments on a transfer. - `wallet_edit_all` - Edit comments on all transfers within multiple enterprises. - `wallet_edit_enterprise` - [DEPRECATED] Edit comments on all transfers within a single enterprise. - `wallet_freeze` - Freeze a wallet. - `wallet_freeze_all` - Freeze any wallet within any enterprises to which the user belongs. - `wallet_manage` - Manage settings for a wallet where the user is a wallet admin. - `wallet_manage_all` - Manage settings for any wallet where the user is a wallet admin within any enterprise to which the user belongs. - `wallet_manage_enterprise` - Manage settings for any wallet where the user is a wallet admin within a single enterprise. - `wallet_spend` - Initiate transactions from a wallet. - `wallet_spend_all` - Initiate transactions from any wallet within any enterprise to which the user belongs. - `wallet_spend_enterprise` - Initiate transactions from any wallet within a single enterprise. - `wallet_stake` - Initiate staking transactions from a wallet. - `wallet_stake_all` - Initiate staking transactions from any wallet within any enterprise to which the user belongs. - `wallet_view` - View a wallet. - `wallet_view_all` - View any wallet within any enterprise to which the user belongs. - `wallet_view_enterprise` - View any wallet within a single enterprise.
---
>                   description: |-
>                     The permissions granted by this access token.
> 
>                     - `all` - Access all actions in the test environment.
>                     - `crypto_compare` - Call CryptoCompare API.
>                     - `enterprise_manage_all` - Manage users and settings for any enterprise to which the user belongs.
>                     - `enterprise_view_all` - View any enterprise to which the user belongs.
>                     - `metamask_institutional` - [DEPRECATED] Enables using BitGo wallets in the MetaMask Institutional extension.
>                     - `openid` - Verify your BitGo user ID using OpenID Connect.
>                     - `pending_approval_update` - Approve or reject pending actions that require approval to proceed.
>                     - `portfolio_view` - [DEPRECATED] Call the Portfolio API.
>                     - `profile` - View your BitGo Profile.
>                     - `settlement_network_read` - View your client's Go Network data, enabling allocations to and from your platform. Only for Go Network partners.
>                     - `settlement_network_write` - Update your client's Go Network data, enabling allocations to and from your platform. Only for Go Network partners.
>                     - `trade_trade` - Initiate trades.
>                     - `trade_view` - View trades.
>                     - `wallet_approve` - Approve policies and transactions for a wallet where the user is a wallet admin.
>                     - `wallet_approve_all` - Approve transactions for any wallet where the user is a wallet admin within any enterprise to which the user belongs.
>                     - `wallet_approve_enterprise` - Approve transactions for any wallet where the user is a wallet admin within a single enterprise.
>                     - `wallet_create` - Create wallets.
>                     - `wallet_edit` - Edit comments on a transfer.
>                     - `wallet_edit_all` - Edit comments on all transfers within multiple enterprises.
>                     - `wallet_edit_enterprise` - [DEPRECATED] Edit comments on all transfers within a single enterprise.
>                     - `wallet_freeze` - Freeze a wallet.
>                     - `wallet_freeze_all` - Freeze any wallet within any enterprises to which the user belongs.
>                     - `wallet_manage` - Manage settings for a wallet where the user is a wallet admin.
>                     - `wallet_manage_all` - Manage settings for any wallet where the user is a wallet admin within any enterprise to which the user belongs.
>                     - `wallet_manage_enterprise` - Manage settings for any wallet where the user is a wallet admin within a single enterprise.
>                     - `wallet_spend` - Initiate transactions from a wallet.
>                     - `wallet_spend_all` - Initiate transactions from any wallet within any enterprise to which the user belongs.
>                     - `wallet_spend_enterprise` - Initiate transactions from any wallet within a single enterprise.
>                     - `wallet_stake` - Initiate staking transactions from a wallet.
>                     - `wallet_stake_all` - Initiate staking transactions from any wallet within any enterprise to which the user belongs.
>                     - `wallet_view` - View a wallet.
>                     - `wallet_view_all` - View any wallet within any enterprise to which the user belongs.
>                     - `wallet_view_enterprise` - View any wallet within a single enterprise.
1397c1467,1470
<                   description: Number of confirmations before triggering the webhook. If 0 or unspecified, requests will be sent to the callback endpoint when the transfer is first seen and when it is confirmed.
---
>                   description: |-
>                     Number of confirmations before triggering the webhook. If 0 or unspecified,
>                     requests will be sent to the callback endpoint when the transfer is first
>                     seen and when it is confirmed.
1402c1475,1477
<                   description: Triggers on coin transfers and token transfers for ETH and Stellar. Must be set to true to receive webhooks for Trade accounts.
---
>                   description: |-
>                     Triggers on coin transfers and token transfers for ETH and Stellar.
>                     Must be set to true to receive webhooks for Trade accounts.
...

Also verified changes look good in ReadMe:

• https://developers.bitgo.com/v1.0_benson-test/reference/v2accesstokenadd#/
• https://developers.bitgo.com/v1.0_benson-test/reference/v2walletaddwebhook#/

Before	After

Ticket: DX-1136

[starfy84]

LGTM