protocol/server: Add extra space between words

Change-Id: Id658db992a43202602e0c30d2c8ca639c4aeadd6
BUG: 1119167
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/8304
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Humble Devassy Chirammal <humble.devassy@gmail.com>