Bump to Manjaro 16.08

src/manjaro.ipxe

@@ -9,7 +9,7 @@ goto ${menu}
 set os Manjaro Linux
 menu ${os} Installers
 item --gap Official Releases
-item 16.06.1 ${space} ${os} 16.06.1
+item 16.08 ${space} ${os} 16.08
 choose manjaro_version || goto manjaro_exit
 
 :manjaro_flavor