fix minLen and maxLen parameters mapping

Author: 2captcha

README.md

@@ -84,8 +84,8 @@ When you submit any image-based captcha use can provide additional options to he
 | Option        | Default Value | Description                                                                                        |
 | ------------- | ------------- | -------------------------------------------------------------------------------------------------- |
 | numeric       | 0             | Defines if captcha contains numeric or other symbols [see more info in the API docs][post options] |
-| minLength     | 0             | minimal answer lenght                                                                              |
-| maxLength     | 0             | maximum answer length                                                                              |
+| minLen        | 0             | minimal answer lenght                                                                              |
+| maxLen        | 0             | maximum answer length                                                                              |
 | phrase        | 0             | defines if the answer contains multiple words or not                                               |
 | caseSensitive | 0             | defines if the answer is case sensitive                                                            |
 | calc          | 0             | defines captcha requires calculation                                                               |

twocaptcha/solver.py

@@ -601,6 +601,8 @@ def rename_params(self, params):
             'caseSensitive': 'regsense',
             'minLen': 'min_len',
             'maxLen': 'max_len',
+            'minLength': 'min_len',
+            'maxLength': 'max_len',
             'hintText': 'textinstructions',
             'hintImg': 'imginstructions',
             'url': 'pageurl',