Apply sentence case to Site Goals metric headings.

[mehidi258]

Summary

Related issue(s):

• Resolves Apply sentence case to all site goals metric headings #13163

PR Author Checklist

• My code is tested and passes existing unit tests.
• My code has an appropriate set of unit tests which all pass.
• My code is backward-compatible with WordPress 5.2 and PHP 7.4.
• My code follows the WordPress coding standards.
• My code has proper inline documentation.
• I have added a QA Brief on the issue linked above.
• I have signed the Contributor License Agreement (see https://cla.developers.google.com/).

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Code Reviewer Checklist

• Run the code.
• Ensure the acceptance criteria are satisfied.
• Reassess the implementation with the IB.
• Ensure no unrelated changes are included.
• Ensure CI checks pass.
• Check Storybook where applicable.
• Ensure there is a QA Brief.
• Ensure there are no unexpected significant changes to file sizes.

Merge Reviewer Checklist

• Ensure the PR has the correct target branch.
• Double-check that the PR is okay to be merged.
• Ensure the corresponding issue has a ZenHub release assigned.
• Add a changelog message to the issue.

[github-actions]

🤖 This comment is automatically updated by CI workflows. Each section is managed independently.

📚 Storybook for 0fdca0e:

• View Storybook

📦 Build files for 0fdca0e:

• Download development build
• Download production build

🎭 Playwright reports for 0fdca0e:

• ✅ WordPress 5.2.21
• ✅ WordPress latest
• ✅ WordPress nightly

[eugene-manuilov]

@mehidi258, please, update VRT images as well.

[mehidi258]

@mehidi258, please, update VRT images as well.

Thanks @eugene-manuilov, Updated.