[PRO-112] Dashboard: Project FTUX copy changes (#8428)

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## PR-Codex overview
This PR focuses on updating the titles and text in the `ProjectFTUX` components to reflect changes in the API endpoint and improve the clarity of the secret key information.

### Detailed summary
- Changed the `title` in `ProjectFTUX.tsx` from "POST /v1/auth/initiate" to "POST /v1/transactions".
- Updated the text in `SecretKeySection.tsx` to clarify the reference to the full secret key, removing a comma for better readability.

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<!-- This is an auto-generated comment: release notes by coderabbit.ai -->

## Summary by CodeRabbit

* **Bug Fixes**
  * Corrected punctuation in descriptive text within the project setup guide

* **Documentation**
  * Updated API endpoint example in the getting started section

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: MananTank

apps/dashboard/src/app/(app)/team/[team_slug]/[project_slug]/(sidebar)/components/ProjectFTUX/ProjectFTUX.tsx

@@ -114,7 +114,7 @@ function GetStartedSection({ project }: { project: Project }) {
       </div>
 
       <CodeShowcase
-        title="POST /v1/auth/initiate"
+        title="POST /v1/transactions"
         tabs={[
           {
             label: "Curl",

apps/dashboard/src/app/(app)/team/[team_slug]/[project_slug]/(sidebar)/components/ProjectFTUX/SecretKeySection.tsx

@@ -16,7 +16,7 @@ export function SecretKeySection(props: {
       <h3 className="mb-1 text-base text-foreground font-medium">Secret Key</h3>
       <p className="mb-3 text-muted-foreground text-sm">
         Identifies and authenticates your application from a backend. <br />{" "}
-        This is not the full secret key, Refer to your saved secret key at the
+        This is not the full secret key. Refer to your saved secret key at the
         time of creation for the full secret key.
       </p>