CONPY-303: Documentation fix for cursor constructor

Fixed documentation for cursor constructor. Thanks to Witold Czarnecki for the bug report.

Author: 9EOR9

mariadb/connections.py

@@ -127,7 +127,7 @@ class will be created.
  connection the entire result set must be fetched.
 
  fetch* methods of the cursor class by default return result set values
- as a tuple, unless named_tuple or dictionary was specified.
+ as a tuple, unless dictionary or named_tuple was specified.
  The latter one exists for compatibility reasons and should be avoided
  due to possible inconsistency in case two or more fields in a result
  set have the same name.