Swift syntax fix

Author: abnegate

templates/swift/base/params.twig

@@ -16,7 +16,7 @@
         {%~ if method.auth | length > 0 %}
         {%~ for node in method.auth %}
         {%~ for key,header in node | keys %}
-            "{{ header | caseLower }}" to client.config["{{ header | caseLower }}"]{% if not loop.last %},{% endif %}
+            "{{ header | caseLower }}": client.config["{{ header | caseLower }}"]{% if not loop.last %},{% endif %}
 
         {%~ endfor %}
         {%~ endfor %}