Discord: uninstall: close running webcord processes

apps/Discord/uninstall

@@ -8,6 +8,8 @@ function error {
 }
 
 if command -v webcord >/dev/null ;then
+  killall webcord &>/dev/null && echo "Closing Discord before uninstalling..."
+  
   "${DIRECTORY}/api" apt_lock_wait
   sudo apt purge -y webcord || error "APT failed to purge webcord!"
 fi