Update api.py

Author: jacquesfeng123

modules/api/api.py

@@ -766,7 +766,7 @@ def invocations(self, req: InvocationsRequest):
 
             if req.options != None:
                 #here I changed json.loads(req.options) into no need of json.loads()
-                options = req.options
+                options = json.loads(req.options)
                 for key in options:
                     shared.opts.data[key] = options[key]
                 print(shared.opts.data)