PR summary

• This pull request addresses the removal of a broken link in the doc/devel/development_workflow.rst and updates the content to improve clarity and accuracy.
• The original link to why-the-flag? was broken, and the resources are no longer available.
• Resolving the issue by replacing "For more information, see why the -a flag? and the git commit manual page." to "For more information, see the git commit manual page."

Closes #29305.

PR checklist

• This PR fixes the issue where the link in development_workflow.rst was broken. Closes [Doc]: Dead link in dev workflow docs #29305 issue
• [N/A] new and changed code is tested
• [N/A] Plotting related features are demonstrated in an example
• [N/A] New Features and API Changes are noted with a directive and release note
• Documentation complies with general and docstring guidelines