Fix postgresql_user documentation render

library/database/postgresql_user

@@ -44,7 +44,7 @@ options:
   password:
     description:
       - set the user's password, before 1.4 this was required.
-      - "When passing an encrypted password it must be generated with the format C('str(\"md5\") + md5( password + username )'), resulting in a total of 35 characters.  An easy way to do this is: C(echo \"md5$(echo -n \"verysecretpasswordJOE\" | md5)\")."
+      - "When passing an encrypted password it must be generated with the format C('str[\\"md5\\"] + md5[ password + username ]'), resulting in a total of 35 characters.  An easy way to do this is: C(echo \\"md5`echo -n \\"verysecretpasswordJOE\\" | md5`\\")."
     required: false
     default: null
   db: