modify prompt post processing

app.py

@@ -61,7 +61,7 @@ def generate_caption(
     outputs = outputs[:, inputs["input_ids"].shape[1] :]
     result = tokenizer.decode(outputs[0])
 
-    result = result.replace("This image showcases", "").lstrip()
+    result = result.replace("This image showcases", "").strip().removesuffix("</s>").strip().capitalize()
     return result