bug#6755: 24.0.50; Customize buffer is too wide. Put doc string on separate line.

[Drew Adams]

> So now the question is how the text should be formatted.  Perhaps
> folding it after inserting it is the right way?  Anybody know 
> how?  :-)
> (I mean, without breaking the widget machinery...)

Not sure if this is what you are asking, but just make sure it starts on a new
line.  That would take care of this problem and similar.  IOW, start with a
newline.