Update docs/developer_guide/api_usage/external_api_jsonrpc.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: celinenilla

docs/developer_guide/api_usage/external_api_jsonrpc.md

@@ -334,7 +334,7 @@ updated = response["result"]
 print("Result:", updated)
 ```
 
-### Working withmMemberships
+### Working with memberships
 
 **Gather the fields**