autohelp: duplicate action takes all movement text
Both "ends this unit's turn." and spends all remaining MP." is shown for the same action under unit type help.
It was already documented for the case when the action alone took all MP.
I added the duplicate text to 3.1 in hrm Feature #920270
Choose the original text for an action alone ending the turn. Merge the hrm Feature #920270 text with the original text for slow_invasion-detection.