icon: add other notch
I noticed the right notch was missing on the L5 icon. I thought I would add it.
You can see how it looks here: https://gitlab.gnome.org/kop3161/phosh-mobile-settings/-/raw/wip/icon/data/icons/hicolor/scalable/apps/org.sigxcpu.MobileSettings.svg
Edited by Chris Talbot