Update linking-a-pull-request-to-an-issue.md

[casals]

Why:

Fixes part of #165 (last suggestion made by the author)

What's being changed:

Issue #165 requires two different fixes. This is the first one, related to changing the document "Linking a pull request to an issue". As suggested by the linked issue's author, I changed the introductory sentence at the beginning of the referenced section to "You can link a pull request to an issue by using a supported keyword in the pull request's description or in a commit message."

Check off the following:

• All of the tests are passing.
• I have reviewed my changes in staging.
• For content changes, I have reviewed the localization checklist
• For content changes, I have reviewed the Content style guide for GitHub Docs.

[janiceilene]

Thanks @casals! I'll send both of these PRs to the @github/docs-content-core team to review 😸

[myarb]

Thanks for this PR! I see you made this same change (along with others) in #199, so I'll close this PR in favor of that one 💖 ✨ and we'll get it reviewed and merged 🔜

[casals]

Hello @myarb - actually the original issue suggested two different alterations in two different documents, so I ended up opening a PR for each of them. This PR refers to complementing the subsection description with "or in a commit message" - which results in a more accurate description of the linking feature. Thanks!

[myarb]

👋🏼 @casals I'm sorry if I misunderstood. If you look at the edited file in this PR (here) and the edited file in the other PR (#199, here), the paragraph under the header Linking a pull request to an issue using a keyword is edited in both with "or in a commit message." I believe #199 captures both alterations, but please let me know if I misunderstood!

[casals]

Hey @myarb - you're right - I'm terribly sorry. I had another pair of PRs related to the same issue and I thought this was the right pair. I have absolutely no idea why I opened 2 PRs for the same file 😅 Sorry for the confusion!