bug#20724: 25.0.50; doc string of option `custom-buffer-style' is incorrect

[Drew Adams]

This part is not up-to-date:

  The value should be a symbol, one of:

  brackets: groups nest within each other with big horizontal brackets.
  links: groups have links to subgroups.

The value can be several other symbols, besides those two.

(Plus, there should be no blank line.)


In GNU Emacs 25.0.50.1 (i686-pc-mingw32)
 of 2014-10-20 on LEG570
Bzr revision: 118168 rgm@gnu.org-20141020195941-icp42t8ttcnud09g
Windowing system distributor `Microsoft Corp.', version 6.1.7601
Configured using:
 `configure --enable-checking=yes,glyphs CPPFLAGS=-DGLYPH_DEBUG=1'