Manual: Clarify A/B belt tuck instructions

[GaryBoone]

On p141 of the manual, it says to pull the belts tight.

• It should also clarify here that the extra belt length should be tucked into the carriage.

• It should further caution here that too much belt, when tucked in, may create a loop large enough to prevent the clockwork mechanism from correctly mating with the carriage. Check and trim the belts equally to allow an unobstructed fit.

[Sigi-cz]

Not fixed fully? There is not a capital letter at the beginning of the sentence and also no end of the sentence. "you can tuck a small amount of excess belt into the empty space in the"