BUG: Changed iteration to iterate over sequence instead of set

Before it was getting a set of values, which have no definite order. Now it's iterating over the sequence, which will fix errors regarding arguments out of order.

Author: ChiefMilesEdgeworth

scripts/validate_docstrings.py

@@ -442,7 +442,8 @@ def signature_parameters(self):
             # of the signature
             return tuple()
         params = list()
-        for parameter, data in sig.parameters.items():
+        for parameter in sig.parameters:
+            data = sig.parameters[parameter]
             if data.kind == inspect.Parameter.VAR_POSITIONAL:
                 params.append("*" + parameter)
             elif data.kind == inspect.Parameter.VAR_KEYWORD: