resolved codestyle issue

Author: mhsarmiento

astroquery/utils/tap/core.py

@@ -2165,4 +2165,4 @@ def __changesContainFlag(changes=None, flag=None, verbose=False):
         return c
 
     def __getconnhandler(self):
-        return self._Tap__connHandler
+        return self._Tap__connHandler