docs: fixed description for MatHeaderRow

[nishchay7pixels]

fixes: #27143

*First contribution

[nishchay7pixels]

Hi, Noob Alert! Need help here. Getting Invalid commit message however I have referred to PRs which were merged before for message format. Any suggestion on what I may be doing wrong. Before rasing this PR I used "docs(api-docs/material-table): fixed description for MatHeaderRow " as commit message however that too failed.

[amysorto]

Thanks so much for contributing! Here are our commit message guidelines: https://github.com/angular/components/blob/main/CONTRIBUTING.md#-commit-message-guidelines.

So the commit message for this PR should be docs(material/table): fix description for MatHeaderRow

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}