Update app.py

app.py

@@ -48,27 +48,20 @@ st.write("Welcome to my blog on **Machine Learning (ML)**!")
 st.markdown(generate_ml_blog())
 
 # Display interactive elements if needed
-st.sidebar.header("Contents")
+st.sidebar.header("📚 Contents")
 st.sidebar.markdown("""
-- [Introduction](#Introduction-to-Machine-Learning-ML)""")
-# Nested sidebar for "Types of Machine Learning"
-st.sidebar.header("Types of Machine Learning")
-st.sidebar.markdown("""
-    - [Supervised Learning](#Supervised-Learning)
-    - [Unsupervised Learning](#Unsupervised-Learning)
-    - [Reinforcement Learning](#Reinforcement-Learning)
-    """)
-st.sidebar.header("Popular Machine Learning Algorithms")
-st.sidebar.markdown("""
-    - [Linear Regression](#Linear-Regression)
-    - [Logistic Regression](#Logistic-Regression)
-    - [Decision Trees](#Decision-Trees)
-    - [K-Nearest Neighbors (KNN)](#K-Nearest-Neighbors-KNN)
-    - [Support Vector Machines (SVM)](#Support-Vector-Machines-SVM)
-    - [Neural Networks](#Neural-Networks)
-""")
-st.sidebar.markdown("""    
-- [Applications](#Applications-of-Machine-Learning)
-- [Conclusion](#Conclusion)
+- 🔍 [Introduction](#Introduction-to-Machine-Learning-ML)
+- 🧠 [Types of Machine Learning](#Types-of-Machine-Learning)
+    - 📊 [Supervised Learning](#Supervised-Learning)
+    - 🔗 [Unsupervised Learning](#Unsupervised-Learning)
+    - 🕹️ [Reinforcement Learning](#Reinforcement-Learning)
+- 🚀 [Popular Algorithms](#Popular-Machine-Learning-Algorithms)
+    - 🔧 Linear Regression
+    - ✔️ Logistic Regression
+    - 🌳 Decision Trees
+    - 🔍 K-Nearest Neighbors
+    - ✂️ Support Vector Machines
+    - 🧠 Neural Networks
 """)
 
+