Update readme.md (fix for #78)

readme.md

@@ -1240,7 +1240,7 @@ use the following supported features (in precedence descending order):
 | --------------------------- | ---------------- | ------------------------------------------- |
 | Single char                 | ```a```          | character ```a```                           |
 | Escaped char                | ```\\|```        | character ```\|```                          |
-| Escaped char (hex)          | ```\\x20```      | space character                             |
+| Escaped char (hex)          | ```\x20```       | space character                             |
 | Any char                    | ```.```          | any character                               |
 | Char range                  | ```[a-z]```      | lower case letter                           |
 | Char set                    | ```[abc]```      | ```a```, ```b```, or a ```c``` character    |