gh-pr-merge: add page (#5731)

pages/common/gh-pr-merge.md

@@ -0,0 +1,24 @@
+# gh pr merge
+
+> Merge GitHub pull requests.
+> More information: <https://cli.github.com/manual/gh_pr_merge>.
+
+- Merge the pull request associated with the current branch interactively:
+
+`gh pr merge`
+
+- Merge the specified pull request, interactively:
+
+`gh pr merge {{pr_number}}`
+
+- Merge the pull request, removing the branch on both the local and the remote:
+
+`gh pr merge --delete-branch`
+
+- Merge the current pull request with the specified merge strategy:
+
+`gh pr merge --{{merge|squash|rebase}}`
+
+- Squash the current pull request into one commit with the message body and merge:
+
+`gh pr merge --squash --body="{{commit_message_body}}"`

pages/common/gh-pr.md

@@ -19,7 +19,7 @@
 
 `gh pr review --approve`
 
-- Merge the pull request associated with the current branch, removing the branch on both the local and the remote:
+- Merge the pull request associated with the current branch interactively:
 
 `gh pr merge`