more idiomatic

Author: KennethKinLum

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

@@ -204,7 +204,7 @@ $ cat .gitignore
 ----
 
 The first line tells Git to ignore any files ending in ``.o'' or ``.a'' – object and archive files that may be the product of building your code.
-The second line tells Git to ignore all files that end with a tilde (`~`) in the filename, which is used by many text editors such as Emacs to mark temporary files.
+The second line tells Git to ignore all files whose names end with a tilde (`~`), which is used by many text editors such as Emacs to mark temporary files.
 You may also include a log, tmp, or pid directory; automatically generated documentation; and so on.
 Setting up a `.gitignore` file before you get going is generally a good idea so you don't accidentally commit files that you really don't want in your Git repository.