Update COMPILING.md

COMPILING.md

@@ -4,6 +4,6 @@ Horizon OC Compilation Instructions
 2. Set up a development enviorment for compiling Atmosphere (https://github.com/Atmosphere-NX/Atmosphere/blob/master/docs/building.md)
 3. Git clone atmosphere (git clone https://github.com/Atmosphere-NX/Atmosphere.git)
 4. Clone the Horizon OC develop branch (``git clone https://github.com/Horizon-OC/Horizon-OC.git --recurse-submodules``)
-5. Create a new folder named "build" in the horizon oc repo
+5. Create a new folder named ``build`` in the horizon oc repo
 6. Copy atmosphere files into that build folder
 7. Run ./build.sh in the root directory