Update app.py

app.py

@@ -77,7 +77,7 @@ def main():
     news_txt = st.text_area("Paste the headline of a news article and hit Ctrl+Enter:", "", height=30)
     top_n = st.slider('Select the number of similar articles to display', 1, 100, 10)
     
-    if news_txt:
+    if st.button("Submit"):
         result = find_similar_news(news_txt, top_n)
         st.markdown(result, unsafe_allow_html=True)