fix: prettier readme

Author: astandrik

README.md

@@ -37,6 +37,8 @@ npm install @ydb-platform/monaco-ghost monaco-editor
 
 The library provides multiple ways to integrate with React applications. Here are the main approaches:
 
+### React Integration with Hook
+
 <details>
 <summary>React Integration with Hook - Recommended for most use cases</summary>
 
@@ -111,6 +113,8 @@ function MyCustomEditor() {
 
 </details>
 
+### Direct Instance Creation
+
 <details>
 <summary>Alternative: Direct Instance Creation - For advanced use cases requiring fine-grained control</summary>
 
@@ -188,6 +192,8 @@ This approach gives you more control over when the ghost instance is created and
 
 </details>
 
+### Pre-built editor component 
+
 <details>
 <summary>Using the pre-built editor component - Simplest way to get started</summary>