Try a different way to get a code fence in README

README.md

@@ -34,7 +34,7 @@ a few simple computations on that quandle, will give the flavor of RAQ. (It is
 presumed that the RAQ package has already been loaded with
 `LoadPackage("RAQ");` prior to these example commands being executed.)
 
-<!--@BeginExampleSession -->```
+```GAP@BeginExampleSession
 gap> S3 := SymmetricGroup(3);
 Sym( [ 1 .. 3 ] )
 gap> Elements(S3);