Use backtick code blocks for syntax highlighting

08-02.md

@@ -91,8 +91,10 @@ deal. You've eliminated the trappings of the compiler—the stack frame
 and the restricted register usage—but you're still *thinking* like the
 compiler. Try this:
 
-    repnz scasw
-    jz    Match
+```nasm
+repnz scasw
+jz    Match
+```
 
 It's a simple example—but, I hope, a convincing one. Stretch your brain
 when you optimize.