[gnome-user-docs: 2/2] Fix bug '734118' - add note about external files

[Paul Cutler <pcutler src gnome org>]

commit cf0bfa748b7fe6a882eca2c7038a02e652d9d602
Merge: da03d52 30e3117
Author: Paul Cutler <paul r cutler gmail com>
Date:   Wed Apr 12 08:55:41 2017 -0500

    Fix bug '734118' - add note about external files
    
    Fix bug 734118.  Edit note for readability and add sentence:
    "The banner message cannot be read from an external file."

 system-admin-guide/C/login-banner.page |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
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