guide:update and check pot

1.remove "Auto hide" mode of dock
2."Notification Area Settings" to "Notification area settings"
3.fixed bug of dock menu text wrong

tower:https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/e90a2b287350457e9ac006ff0798e5d4/

Change-Id: I5cbdd764d7987b0394f7b8783bc2d67806ce48b1