Adjust Position of Semicolon

"``refs;''" should be "``refs'';".

Author: oldsharp

book/10-git-internals/sections/refs.asc

@@ -4,7 +4,7 @@
 You can run something like `git log 1a410e` to look through your whole history, but you still have to remember that `1a410e` is the last commit in order to walk that history to find all those objects.
 You need a file in which you can store the SHA-1 value under a simple name so you can use that pointer rather than the raw SHA-1 value.
 
-In Git, these are called ``references'' or ``refs;'' you can find the files that contain the SHA-1 values in the `.git/refs` directory.
+In Git, these are called ``references'' or ``refs''; you can find the files that contain the SHA-1 values in the `.git/refs` directory.
 In the current project, this directory contains no files, but it does contain a simple structure:
 
 [source,console]