Update app.py

app.py

@@ -308,6 +308,7 @@ elif selected_page == "⚙️ NLP Techniques":
     st.header("⚙️ NLP Techniques")
     if selected_subpoint:
         if selected_subpoint == " Tokenization":
+            st.write("### Tokenization")
             st.write("""
                 Breaking down text into smaller units such as words or sentences to make it manageable for analysis.
                 **Example:**