Improve the description of the Network Admin Email option to better describe what the address will be used for. Fixes #23569 props nacin.


git-svn-id: https://develop.svn.wordpress.org/trunk@26640 602fd350-edb4-49c9-b593-d223f7449a82
westi forgot my full stop. see #23569.


git-svn-id: https://develop.svn.wordpress.org/trunk@26641 602fd350-edb4-49c9-b593-d223f7449a82