sync_default_gems.rb: fix the position to insert the original URL
Since the regexp had expected an empty line before Co-Authored-By: trailer lines, it failed to match when the body has the trailer only.
Co-Authored-By:
sync_default_gems.rb: fix the position to insert the original URL
Since the regexp had expected an empty line before
Co-Authored-By:
trailer lines, it failed to match when the body has the trailer only.