Move mention of git 2.1.2 to intro paragraph

doc/update/7.11-to-7.12.md

@@ -7,8 +7,8 @@
 If you compiled Git from source on your GitLab server then please double-check
 that you are using a version that protects against CVE-2014-9390. For six
 months after this vulnerability became known the GitLab installation guide
-still contained instructions that would install an outdated, 'vulnerable' Git
-version.
+still contained instructions that would install the outdated, 'vulnerable' Git
+version 2.1.2.
 
 Run the following command to get your current Git version.
 
@@ -21,9 +21,8 @@ to the outdated instructions from the GitLab installation guide and you can go
 to the next step 'Stop server' below.
 
 If you see a version string then it should be v1.8.5.6, v1.9.5, v2.0.5, v2.1.4,
-v2.2.1 or newer. If you followed the GitLab installation guide to the letter
-then you probably have v2.1.2. You can use the [instructions in the GitLab
-source installation
+v2.2.1 or newer. You can use the [instructions in the GitLab source
+installation
 guide](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/install/installation.md#1-packages-dependencies)
 to install a newer version of Git.