Fix deprecation warning by changing `CLIPFeatureExtractor` to `CLIPImageProcessor`.

model_index.json

@@ -3,20 +3,20 @@
   "_diffusers_version": "0.2.4",
   "feature_extractor": [
     "transformers",
-    "CLIPFeatureExtractor"
+    "CLIPImageProcessor"
   ],
   "safety_checker": [
     "stable_diffusion",
     "StableDiffusionSafetyChecker"
   ],
-  "text_encoder": [
-    "transformers",
-    "CLIPTextModel"
-  ],
   "scheduler": [
     "diffusers",
     "DDIMScheduler"
   ],
+  "text_encoder": [
+    "transformers",
+    "CLIPTextModel"
+  ],
   "tokenizer": [
     "transformers",
     "CLIPTokenizer"