Updated OpenGL Graphic API (markdown)

OpenGL-Graphic-API.md

@@ -16,8 +16,8 @@ HTML5 (Web) | `WebGL 1.0 (OpenGL ES 2.0)` | `OpenGL ES 2.0` transformed to `WebG
 Additional backends (not supported by default): 
 
 PLATFORM | OpenGL version | Notes
---- | :------: | ---
-DESKTOP:Windows | `OpenGL ES 2.0` | Support through two possible ways: `WGL_EXT_create_context_es2_profile` <br> extension or [ANGLE]() project
+--- | :-------: | ---
+DESKTOP:Windows | `OpenGL ES 2.0` | Support through two possible ways: `WGL_EXT_create_context_es2_profile` <br> extension or [ANGLE](https://github.com/google/angle) project
 DESKTOP:Linux | `OpenGL ES 2.0` | Support through `GLX_EXT_create_context_es2_profile` extension
 ANDROID | `OpenGL ES 3.0` | Only about [55% Android devices](https://developer.android.com/about/dashboards/index.html) support it right now.
 RASPBERRY PI | `OpenGL 1.1`,<br> `OpenGL 2.1` | Supported through Gallium OpenGL driver, <br> only available for RPI 2 and 3