polish fix

app.py

@@ -103,6 +103,8 @@ async def translate(request: Request):
                 chunk = f">>nob<< {chunk}"
             if model_id == "Helsinki-NLP/opus-mt-tc-base-en-sh":
                 chunk = f">>cnr<< {chunk}"
+            if model_id == "Helsinki-NLP/opus-mt-en-sla":
+                chunk = f">>pol<< {chunk}"
 
             # tokenize
             inputs = tokenizer(chunk, return_tensors="pt", padding=True, truncation=True)