Use markdown numbered list in githubflow.md

Author: TomGillen

docs/git-branching-strategies/githubflow.md

@@ -3,12 +3,12 @@ GitHub Flow is a simple and effective branching strategy which the folks at GitH
 
 GitHub Flow is in a nutshell:
 
-1) Update master to latest [upstream](../reference/git-setup.md#upstream) code  
-2) Create a feature branch `git checkout -b myFeatureBranch`  
-3) Do the feature/work  
-4) Push feature branch to [origin](../reference/git-setup.md#origin)  
-5) Create pull request from origin/<featureBranch> -> upstream/master  
-6) Review, fix raised comments, merge your PR or even better, get someone else to.  
+1. Update master to latest [upstream](../reference/git-setup.md#upstream) code  
+1. Create a feature branch `git checkout -b myFeatureBranch`  
+1. Do the feature/work  
+1. Push feature branch to [origin](../reference/git-setup.md#origin)  
+1. Create pull request from origin/<featureBranch> -> upstream/master  
+1. Review, fix raised comments, merge your PR or even better, get someone else to.  
 
 The main rule of GitHub Flow is that master should *always* be deployable. GitHub Flow allows and encourages [continuous delivery](../reference/continuous-delivery.md).