Show GH CLI command for starting build (#221)

Co-authored-by: Adam Turner <[email protected]>

Author: hugovk

run_release.py

@@ -872,6 +872,14 @@ def start_build_of_source_and_docs(db: ReleaseShelf) -> None:
     print(f"- Git commit to target for the release: {commit_sha}")
     print(f"- CPython release number: {db['release']}")
     print()
+    print("Or using the GitHub CLI run:")
+    print(
+        "  gh workflow run source-and-docs-release.yml --repo python/release-tools"
+        f" -f git_remote={origin_remote_github_owner}"
+        f" -f git_commit={commit_sha}"
+        f" -f cpython_release={db['release']}"
+    )
+    print()
 
     if not ask_question("Have you started the source and docs build?"):
         raise ReleaseException("Source and docs build must be started")