Update README.md

Author: Tim-Maes

README.md

@@ -22,8 +22,8 @@ A security-first Blazor iframe component with automatic resizing, cross-frame me
 - [Quick Start Guide](https://github.com/Tim-Maes/BlazorFrame/tree/master/docs/getting-started/quick-start.md)
 
 - [Security Features](https://github.com/Tim-Maes/BlazorFrame/tree/master/docs/security)
- - [Configuration Validation](https://github.com/Tim-Maes/BlazorFrame/blob/master/docs/security/configuration-validation.md)
- - [Sandbox](https://github.com/Tim-Maes/BlazorFrame/blob/master/docs/security/sandbox.md)
+  - [Configuration Validation](https://github.com/Tim-Maes/BlazorFrame/blob/master/docs/security/configuration-validation.md)
+  - [Sandbox](https://github.com/Tim-Maes/BlazorFrame/blob/master/docs/security/sandbox.md)
 
 - [Configuration Guide](https://github.com/Tim-Maes/BlazorFrame/tree/master/docs/configuration)