fixed a minor bug

src/streamlit_app.py

@@ -74,7 +74,7 @@ async def deep_research(query: str, max_depth: int, time_limit: int, max_urls: i
         firecrawl_app= FirecrawlApp(api_key= st.session_state.firecrawl_api_key)
         params= {
             "max_depth": max_depth,
-            "time_dimit": time_limit,
+            "time_limit": time_limit,
             "max_urls": max_urls
         }