chore: add issue links to changeset

Author: andykenward

.changeset/loud-signs-obey.md

@@ -2,4 +2,4 @@
 "github-actions-cloudflare-pages": minor
 ---
 
-Added support for the GitHub workflow_run event to enable fork-safe preview deployments and pull request comments.
+Added support for the GitHub workflow_run event to enable fork-safe preview deployments and pull request comments. [#729](https://github.com/andykenward/github-actions-cloudflare-pages/issues/729)

.changeset/wide-pears-drive.md

@@ -2,4 +2,4 @@
 "github-actions-cloudflare-pages": minor
 ---
 
-feat: support a input pr-number to override the event logic. Useful for forked PRs.
+feat: support a input pr-number to override the event logic. Useful for forked PRs. [#729](https://github.com/andykenward/github-actions-cloudflare-pages/issues/729)