add fix to "https://help.ubuntu.com/stable/ubuntu-help/power-suspendfail.html.en"

on https://help.ubuntu.com/stable/ubuntu-help/power-suspendfail.html.en
there is advice for what to do when your laptop is suspended but will not resume.

One more tip should be provided:

Current text:

If you suspend your computer and then press a key or click the mouse, it should wake up and display a screen asking for your password. If this does not happen, try pressing the power button (do not hold it in, just press it once).

If this still does not help, make sure that your computer’s monitor is switched on and try pressing a key on the keyboard again.

As a last resort, turn off the computer by holding in the power button for 5-10 seconds, although you will lose any unsaved work by doing this. You should then be able to turn on the computer again.

Recommened text:

If you suspend your computer and then press a key or click the mouse, it should wake up and display a screen asking for your password. If this does not happen, try pressing the power button (do not hold it in, just press it once).

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If this does not work, disconnect and reconnect the power adapter (when it is powered on at the wall socket).
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If this still does not help, make sure that your computer’s monitor is switched on and try pressing a key on the keyboard again.

As a last resort, turn off the computer by holding in the power button for 5-10 seconds, although you will lose any unsaved work by doing this. You should then be able to turn on the computer again.