Merge pull request #916 from jaspu/master

'it' replaced by 'is' in 10th chap, objects section

Author: ben

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

@@ -5,7 +5,7 @@ Git is a content-addressable filesystem.
 Great.
 What does that mean?
 It means that at the core of Git is a simple key-value data store.
-What this means it that you can insert any kind of content into a Git repository, for which Git will hand you back a unique key you can use later to retrieve that content.
+What this means is that you can insert any kind of content into a Git repository, for which Git will hand you back a unique key you can use later to retrieve that content.
 
 As a demonstration, let's look at the plumbing command `git hash-object`, which takes some data, stores it in your `.git/objects` directory (the _object database_), and gives you back the unique key that now refers to that data object.