Fix /etc/issue

backslashes are escaped in `/etc/issue`. There are backslashes in the ascii art logo, which should not be escaped. I have doubled them all.

Author: br

stage4/00-wifi-connect/files/issue

@@ -1,11 +1,11 @@
 HOOBS - Homebridge Out Of The Box - \n (\r)
 
   _    _  ____   ____  ____   _____
- | |  | |/ __ \ / __ \|  _ \ / ____|
+ | |  | |/ __ \\ / __ \\|  _ \\ / ____|
  | |__| | |  | | |  | | |_) | (___
- |  __  | |  | | |  | |  _ < \___ \
+ |  __  | |  | | |  | |  _ < \\___ \\
  | |  | | |__| | |__| | |_) |____) |
- |_|  |_|\____/ \____/|____/|_____/
+ |_|  |_|\\____/ \\____/|____/|_____/
 
 
 **** Need To Setup WiFi? ****