DocumentationStyleBear: Corrects generated patch

This removes the extra 'r' added in raw docstrings
in generated patch in python by DocumentationStyleBear.

Fixes coala#2010

requirements.txt

@@ -1,6 +1,7 @@
 # NOTE: This file is parsed by .ci/generate_bear_requirements.py
 # Use >= for development versions so that source builds always work
 coala>=0.12.0.dev20170828055500
+-e git+https://github.com/kriti21/coala.git#egg=b62f5a98da19cb99a429a32e194d002e9947fc87
 # Dependencies inherited from coala
 # libclang-py3
 # coala_utils

tests/documentation/test_files/DocumentationStyleBear/bad_file6.py.test

@@ -0,0 +1,51 @@
+def docstring_missing_description(dummy):
+    r"""
+    :param dummy:dummy description
+    :return:nothing"""
+    return None
+
+
+class docstring_class_testcase(dummy):
+    r"""
+    Example raw docstring class.
+    :param dummy:dummy description
+    :return:nothing
+    """
+
+    def docstring_memberfunction(self, dummy):
+        r'''
+        This is a member function.
+        :param dummy:dummy description
+        :return:nothing
+        '''
+        return None
+    return None
+
+
+class docstring_if_indented():
+    r'''This is if indented function example.'''
+
+    if 1 != 0:
+        def hello_planet(self):
+            r"""
+            This is `if` indented block function.
+            """
+            return None
+    else:
+        def hello_venus(self):
+            r"""This is `if` indented block function."""
+            return None
+
+
+def docstring_inner_function(dummy):
+    r'''
+    This is docstring inner function example.
+    :param dummy: dummy description
+    '''
+    def check_directory(dummy):
+        r"""
+        This is the inner function.
+        :param dummy: dummy description
+        :return: nothing
+        """
+        return None

tests/documentation/test_files/DocumentationStyleBear/bad_file6.py.test.correct

@@ -0,0 +1,69 @@
+def docstring_missing_description(dummy):
+    r"""
+    :param dummy:
+        dummy description
+    :return:
+        nothing
+    """
+    return None
+
+
+class docstring_class_testcase(dummy):
+    r"""
+    Example docstring class.
+
+    :param dummy:
+        dummy description
+    :return:
+        nothing
+    """
+
+    def docstring_memberfunction(self, dummy):
+        r'''
+        This is a member function.
+
+        :param dummy:
+            dummy description
+        :return:
+            nothing
+        '''
+        return None
+    return None
+
+
+class docstring_if_indented():
+    r'''
+    This is if indented function example.
+    '''
+
+    if 1 != 0:
+        def hello_planet(self):
+            r"""
+            This is `if` indented block function.
+            """
+            return None
+    else:
+        def hello_venus(self):
+            r"""
+            This is `if` indented block function.
+            """
+            return None
+
+
+def docstring_inner_function(dummy):
+    r'''
+    This is docstring inner function example.
+
+    :param dummy:
+        dummy description
+    '''
+    def check_directory(dummy):
+        r"""
+        This is the inner function.
+
+        :param dummy:
+            dummy description
+        :return:
+            nothing
+        """
+        return None

tests/documentation/test_files/DocumentationStyleBear/good_file4.py.test

@@ -0,0 +1,12 @@
+def docstring_accepted(dummy):
+    r"""
+    This is the accepted standard of a docstring.
+
+    :param dummy:
+        first line description
+        second line description
+    :return:
+        first line description
+        second line description
+    """
+    return None