Update GHE webhook sample description

Author: linghaoz

doc_source/sample-github-enterprise.md

@@ -1,6 +1,6 @@
 # GitHub Enterprise Sample for CodeBuild<a name="sample-github-enterprise"></a>
 
-AWS CodeBuild supports GitHub Enterprise as a source repository\. This sample shows how to set up your CodeBuild projects when your GitHub Enterprise repository has a certificate installed\. It also shows how to enable webhooks so that CodeBuild rebuilds the source code every time a code change is pushed to your private GitHub Enterprise repository\.
+AWS CodeBuild supports GitHub Enterprise as a source repository\. This sample shows how to set up your CodeBuild projects when your GitHub Enterprise repository has a certificate installed\. It also shows how to enable webhooks so that CodeBuild rebuilds the source code every time a code change is pushed to your GitHub Enterprise repository\.
 
 ## Prerequisites<a name="sample-github-enterprise-prerequisites"></a>
 
@@ -123,4 +123,4 @@ If you need to generate a payload URL and secret key again, you must first delet
 1. Enter the payload URL and secret key, accept the defaults for the other fields, and then choose **Add webhook**\.  
 ![\[Image NOT FOUND\]](http://docs.aws.amazon.com/codebuild/latest/userguide/images/ghe-webhook.png)![\[Image NOT FOUND\]](http://docs.aws.amazon.com/codebuild/latest/userguide/)![\[Image NOT FOUND\]](http://docs.aws.amazon.com/codebuild/latest/userguide/)
 
-1. Return to your CodeBuild project\. Close the **Create webhook** dialog box and choose **Start build**\.
+1. Return to your CodeBuild project\. Close the **Create webhook** dialog box and choose **Start build**\.