About page: Replace 3.7 with the current version (3.7.1, etc.).

Normally this would be sprintf'd in but we don't want to change a string at this point.

fixes #25683 for the 3.7 branch.


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25927 602fd350-edb4-49c9-b593-d223f7449a82
3.7.1-beta1


git-svn-id: https://develop.svn.wordpress.org/branches/3.7@25928 602fd350-edb4-49c9-b593-d223f7449a82