fix: Triple dash added back for the tabs

en/manual/platforms/linux/setup-and-requirements.md

@@ -31,6 +31,8 @@ sudo apt-get install libfreetype6-dev
 sudo dnf install freetype-devel
 ```
 
+---
+
 ## OpenAL
 
 To play sounds and music, we use the [OpenAL](https://www.openal.org/) library. It can be installed via:
@@ -47,6 +49,8 @@ sudo apt-get install libopenal-dev
 sudo dnf install openal-soft-devel
 ```
 
+---
+
 ## SDL2
 
 To run games on Linux, we use the [SDL2](https://www.libsdl.org/) library which provides the ability to create windows, handle mouse, keyboard and joystick events. The minimum required version is 2.0.4 and can be installed via:
@@ -63,6 +67,8 @@ sudo apt-get install libsdl2-dev
 sudo dnf install SDL2-devel
 ```
 
+---
+
 ## .NET Core
 
 For information about how to install .NET Core, see the [.NET Core instructions for Linux](https://docs.microsoft.com/en-us/dotnet/core/linux-prerequisites).