Update app.py

app.py

@@ -65,7 +65,7 @@ def query(prompt, model, is_negative=False, steps=30, cfg_scale=7, sampler="DPM+
     if model == 'CleanLinearMix':
         API_URL = "https://api-inference.huggingface.co/models/digiplay/CleanLinearMix_nsfw"
     if model == 'Custom':
-        API_URL == f"https://api-inference.huggingface.co/models/{custom}"
+        API_URL == f'https://api-inference.huggingface.co/models/{custom}'
     
     payload = {
         "inputs": prompt,