[gnome-initial-setup] README: Remove reference to GNOME 3

[Will Thompson <wjt src gnome org>]

commit 0821cc86a618752d9f67c348bc985f3e909898e4
Author: Will Thompson <will willthompson co uk>
Date:   Mon May 30 14:44:42 2022 +0000

    README: Remove reference to GNOME 3
    
    It's just GNOME now.

 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/README.md b/README.md
index bd8e6621..ecf31689 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ good defaults:
  * Create a user account
  * Set the correct timezone / location
  * Set up online accounts
- * Learn some basics about GNOME 3
+ * Learn some basics about GNOME
 
 The desired experience is that the system boots straight into the
 initial-setup tool, and when the setup tasks are completed, we smoothly