From 640a89676168106957817a4df3a830c9266955e3 Mon Sep 17 00:00:00 2001
From: Joao Dinis <1000267@isep.ipp.pt>
Date: Wed, 21 Sep 2016 11:51:02 +0200
Subject: [PATCH] docs(guide/concepts): insert comma

Closes #15166
---
 docs/content/guide/concepts.ngdoc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/docs/content/guide/concepts.ngdoc b/docs/content/guide/concepts.ngdoc
index 615da692d5f5..79816c8c12e8 100644
--- a/docs/content/guide/concepts.ngdoc
+++ b/docs/content/guide/concepts.ngdoc
@@ -155,7 +155,7 @@ More accurately, the file specifies a constructor function that will be used to
 controller instance. The purpose of controllers is to expose variables and functionality to
 expressions and directives.
 
-Besides the new file that contains the controller code we also added an
+Besides the new file that contains the controller code, we also added an
 {@link ng.directive:ngController `ng-controller`} directive to the HTML.
 This directive tells Angular that the new `InvoiceController` is responsible for the element with the directive
 and all of the element's children.