Add punctuation to the init paragraph

Author: crd

book/02-git-basics/sections/getting-a-repository.asc

@@ -7,7 +7,7 @@ The second clones an existing Git repository from another server.
 
 ==== Initializing a Repository in an Existing Directory
 
-If you're starting to track an existing project in Git, you need to go to the project's directory and type
+If you're starting to track an existing project in Git, you need to go to the project's directory and type:
 
 [source,console]
 ----