Update README.md

Author: lyushher

README.md

@@ -63,7 +63,7 @@ This project is built using modern and scalable technologies to ensure high perf
 - ✅ Clean, modular architecture for maintainability
 - ✅ One-click deployment to AWS via GitHub Actions
 
-## 🔐 Security & Authentication
+### 🔐 Security & Authentication
 
 > Note: This project does not implement authentication or rate limiting.  
 If deployed in a public environment, consider adding access control or usage limits to prevent abuse.
@@ -165,3 +165,4 @@ This project is open-source and available under the terms of the [MIT License](L
 
 
 
+