Updated _Sidebar (markdown)

_Sidebar.md

@@ -22,4 +22,5 @@
 * [How To: audio module as standalone library](Use-audio-module-as-standalone-library)
 * [How To: rlgl module as standalone library](Use-rlgl-module-as-standalone-library)
 * [How To: Create Visual Studio Project](Create-Visual-Studio-Project)
+* [How To: Redirect-raylib-output-to-Framebuffer-1 (Raspberry Pi)](Redirect-raylib-output-to-Framebuffer-1)
 * [FAQ](FAQ)