Fix parameter type annotations in merge_settings

Author: pitbulk

src/onelogin/saml2/idp_metadata_parser.py

@@ -221,10 +221,10 @@ def merge_settings(settings, new_metadata_settings):
         Will update the settings with the provided new settings data extracted from the IdP metadata
 
         :param settings: Current settings dict data
-        :type settings: string
+        :type settings: dict
 
         :param new_metadata_settings: Settings to be merged (extracted from IdP metadata after parsing)
-        :type new_metadata_settings: string
+        :type new_metadata_settings: dict
 
         :returns: merged settings
         :rtype: dict