Finish lines with a dot

For a moment I didn't get the meaning of the comment myself. Monday
mornings are the worst.

randomize-mac/init/randomize-mac.conf

-# upstart script to run randomize-mac for a list of interfaces
-# place in /etc/init
+# upstart script to run randomize-mac for a list of interfaces.
+# place in /etc/init.
 
 # felix@tribut.de