help: it's not necessary to escape quotes

mercurial/help.py

@@ -25,7 +25,7 b' def moduledoc(file):'
             break
 
     start = line[:3]
-    if start == '\"\"\"' or start == "\'\'\'":
+    if start == '"""' or start == "'''":
         line = line[3:]
         while line:
             if line.rstrip().endswith(start):