generate: Blank line error fix

A new line is added at the end of bullets list

Fixes coala#4

generate

@@ -158,7 +158,7 @@ def recurse(aspect, level=0):
                 output += "* `" + subsub_name + " <" + subsub_name + "/README.rst>`_\n"
         else:
             output += "This aspect does not have any sub aspects.\n\n"
-
+        output += "\n"
         if subaspect.docs.example:
             output += "Example\n"
             output += "=======\n\n"