Update a_deeper_look_at_git.md

Correcting grammar for: 

#### Getting set up
'Create send file' should probably be 'Create second file'

git/intermediate_git/a_deeper_look_at_git.md

@@ -36,7 +36,7 @@ Before we get started with the lesson, let's create a Git playground in which we
 ```bash
 touch test{1..4}.md
 git add test1.md && git commit -m 'Create first file'
-git add test2.md && git commit -m 'Create send file'
+git add test2.md && git commit -m 'Create second file'
 git add test3.md && git commit -m 'Create third file and create fourth file'
 ```