chore(info): tweak output text

[skip ci]

Author: sanjayankur31

neuroml/nml/generatedssupersuper.py

@@ -386,7 +386,9 @@ def info(self, show_contents=False, return_format="string"):
 
         class_name = self.__class__.__name__
         info_str += f"NeuroMLv2 schema documentation: https://docs.neuroml.org/Userdocs/Schemas/Index.html?highlight={class_name[0].lower()}{class_name[1:]}#{class_name.lower()} for more information.\n\n"
-        info_str += "Valid members for {} are:\n".format(class_name)
+        if show_contents is False:
+            info_str += "Valid members for {} are:\n".format(class_name)
+
         all_members = self._get_members()
         for member in all_members:
             member_str = "* {} (class: {}, {})\n".format(