fixed PY-6548 @type in class docstrings does not recognize class variables

python/testData/inspections/PyUnresolvedReferencesInspection/docstring.py

@@ -0,0 +1,13 @@
+class Test(object):
+  """
+  @cvar some: some variable
+  @type some: C{str}
+  """
+  some = 'hello'
+
+  def q(self, another):
+    """
+    @param another: another variable
+    @type another: C{str}
+    """
+    pass