mention other distros

Install-on-GNU-Linux.md

@@ -1,3 +1,6 @@
+If you are a packager for a Distribution not listed here, please take the time and create a raylib package.
+
+# openSUSE
 openSUSE Tumbleweed has raylib in the [devel:libraries:c_c++ devel project](https://build.opensuse.org/project/show/devel:libraries:c_c++).
 
 You can easily install it by adding the repository, refreshing your sources and insalling:
@@ -5,6 +8,4 @@ You can easily install it by adding the repository, refreshing your sources and
 zypper ar -f http://download.opensuse.org/repositories/devel:/libraries:/c_c++/openSUSE_Factory/devel:libraries:c_c++.repo
 zypper ref
 zypper in raylib-devel
-```
-
-If you are a packager for another Distribution, please take the time and create a raylib package.
+```