Make the sentence abuot amending to be more accurate

Author: Kaartic Sivaraam

book/07-git-tools/sections/rewriting-history.asc

@@ -25,7 +25,7 @@ That drops you into your text editor, which has your last commit message in it,
 When you save and close the editor, the editor writes a new commit containing that message and makes it your new last commit.
 
 If you’ve committed and then you want to change the snapshot you committed by adding or changing files, possibly because you forgot to add a newly created file when you originally committed, the process works basically the same way.
-You stage the changes you want by editing a file and running `git add` on it or `git rm` to a tracked file, and the subsequent `git commit --amend` takes your current staging area and makes it the snapshot for the new commit.
+You stage the changes you want by editing a file and running `git add` on it or `git rm` to a tracked file, and the subsequent `git commit --amend` takes your current staging area and adds it to the last snapshot making it the snapshot of the last commit.
 
 You need to be careful with this technique because amending changes the SHA-1 of the commit.
 It’s like a very small rebase – don’t amend your last commit if you’ve already pushed it.