demonstrate ?raw=1 in test.md

Author: juleskers

dir/test.md

@@ -5,3 +5,8 @@
 [../test.md](../test.md)
 
 [../../test.md](../../test.md)
+
+
+[test.md?raw=1](test.md?raw=1) <-- fancy github-specific hack to link to raw-content instead of normal view.  
+Not supported in gitea (see [go-gitea/gitea/issues/34104](https://github.com/go-gitea/gitea/issues/34104))   
+Also not supported in gitlab.