[gnome-initial-setup] README.md: Syntax-highlight example

[Will Thompson <wjt src gnome org>]

commit 30f35a3b1eed6e564cbd44e5566354afe5ae043d
Author: Will Thompson <will willthompson co uk>
Date:   Sun Jul 5 13:13:26 2020 +0000

    README.md: Syntax-highlight example

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index e0311ce6..0918910e 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@ configuration from that path; neither of the default paths will be checked.
 
 Here's a (contrived) example of what can be controlled using this file:
 
-```
+```ini
 [pages]
 # Never show the timezone page
 skip=timezone