further repair the /docs page to not break styles with the attempted fix

modules/processing.py

@@ -199,6 +199,8 @@ class StableDiffusionProcessing:
             print("sampler_index argument for StableDiffusionProcessing does not do anything; use sampler_name", file=sys.stderr)
 
         self.comments = {}
+
+        if self.styles is None:
             self.styles = []
 
         self.sampler_noise_scheduler_override = None