Updating docs to reference my bugfix edition.

docs/prerequisites.md

@@ -3,7 +3,7 @@
 ### Required software
 
 * [GitLab 6.x][1]
-* [python-gitlab][2] (note due to certain bugs you should obtain my fork [python-gitlab @ 0c4e818][8])
+* [python-gitlab][2] (note due to certain bugs you should obtain my fork [python-gitlab @ 6d6b270][8])
 * [GNU coreutils][3]
 * [git 1.8.4][4]
 
@@ -17,7 +17,7 @@ python-gitlab
     yum install python-setuptools
     git clone https://github.com/sag47/python-gitlab.git
     cd python-gitlab
-    git checkout 0c4e8187c2c899e9eb6a8c44338d1c1e00f7503a
+    git checkout 6d6b270e9829012b99d700eb1ca3802ef05f40b4
     python setup.py
 
 You can find the source to git at the [git-core project][5].  For instructions on other platforms see the [Getting Started - Installing Git section of the git book][6].
@@ -45,4 +45,4 @@ Next up is [Installation and Setup](installation.md).
 [5]: http://code.google.com/p/git-core/
 [6]: http://git-scm.com/book/en/Getting-Started-Installing-Git
 [7]: https://www.kernel.org/pub/software/scm/git/docs/git-svn.html
-[8]: https://github.com/sag47/python-gitlab/commit/0c4e8187c2c899e9eb6a8c44338d1c1e00f7503a
+[8]: https://github.com/sag47/python-gitlab/tree/bugfix-edition