Polish

See gh-33384

git/hooks/prepare-forward-merge

@@ -10,7 +10,7 @@ $log = Logger.new(STDOUT)
 $log.level = Logger::WARN
 
 def get_fixed_issues()
-  $log.debug "Searching for for forward merge"
+  $log.debug "Searching for forward merge"
   rev=`git rev-parse -q --verify MERGE_HEAD`.strip
   $log.debug "Found #{rev} from git rev-parse"
   return nil unless rev
@@ -65,7 +65,7 @@ if message_type != "merge"
   exit 0;
 end
 
-$log.debug "Searching for for forward merge"
+$log.debug "Searching for forward merge"
 fixed = get_fixed_issues()
 rewritten_message = rewrite_message(message_file, fixed)
 File.write(message_file, rewritten_message)