guide:update the LauncherSearch Page Text and UE

and update pot

tower:https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/770139f231f84faab9cbd05eb5e41089/?proto=https
Change-Id: Id7396c42cedaf58689f8de47f25abf6d93dd6a0a