fix errors

Author: prostomarkeloff

vk_api/keyboard.py

@@ -124,8 +124,8 @@ def add_location_button(self, payload=None):
         current_line = self.lines[-1]
 
         if len(current_line) != 0:
-            raise ValueError('
-                    This type of button takes the entire width of the line'
+            raise ValueError(
+                    'This type of button takes the entire width of the line'
                     )
 
         if payload is not None and not isinstance(payload, six.string_types):
@@ -154,8 +154,8 @@ def add_vkpay_button(self, hash, payload=None):
         current_line = self.lines[-1]
 
         if len(current_line) != 0:
-            raise ValueError('
-                    This type of button takes the entire width of the line'
+            raise ValueError(
+                    'This type of button takes the entire width of the line'
                     )
 
         if payload is not None and not isinstance(payload, six.string_types):
@@ -192,8 +192,8 @@ def add_vkapps_button(self, app_id, owner_id, label, hash, payload=None):
         current_line = self.lines[-1]
 
         if len(current_line) != 0:
-            raise ValueError('
-                    This type of button takes the entire width of the line'
+            raise ValueError(
+                    'This type of button takes the entire width of the line'
                     )
 
         if payload is not None and not isinstance(payload, six.string_types):