Clarify profile pin contribution requirements (#45909)

Co-authored-by: Kevin Heis <[email protected]>

content/account-and-profile/setting-up-and-managing-your-github-profile/customizing-your-profile/pinning-items-to-your-profile.md

@@ -14,7 +14,7 @@ topics:
   - Profiles
 shortTitle: Pin items
 ---
-You can pin a public repository if you own the repository or you've made contributions to the repository. Commits to forks don't count as contributions, so you can't pin a fork that you don't own. For more information, see "[AUTOTITLE](/account-and-profile/setting-up-and-managing-your-github-profile/managing-contribution-settings-on-your-profile/why-are-my-contributions-not-showing-up-on-my-profile)"
+You can pin a public repository if you own the repository or you've made contributions to the repository within the last year. Commits to forks don't count as contributions, so you can't pin a fork that you don't own. For more information, see "[AUTOTITLE](/account-and-profile/setting-up-and-managing-your-github-profile/managing-contribution-settings-on-your-profile/why-are-my-contributions-not-showing-up-on-my-profile)"
 
 You can pin any public gist you own.