Update recording-changes.asc

Author: DiamondeX

book/02-git-basics/sections/recording-changes.asc

@@ -28,7 +28,7 @@ Your branch is up-to-date with 'origin/master'.
 nothing to commit, working directory clean
 ----
 
-This means you have a clean working directory – in other words, there are no modified files among tracked ones.
+This means you have a clean working directory – in other words, there are no tracked files that are modified.
 Git also doesn't see any untracked files, or they would be listed here.
 Finally, the command tells you which branch you're on and informs you that it has not diverged from the same branch on the server.
 For now, that branch is always ``master'', which is the default; you won't worry about it here.