Remove leading `*' from docs of some defcustoms etc.

Remove leading `*' from docs of some defcustoms etc.

* emulation/crisp.el, emulation/cua-base.el, emulation/edt.el:
* emulation/pc-select.el, emulation/vip.el, international/iso-ascii.el:
* international/kkc.el, international/ogonek.el, mail/feedmail.el:
* net/browse-url.el, net/eudc-vars.el, net/net-utils.el:
* net/rcompile.el, net/rlogin.el, textmodes/enriched.el:
* textmodes/makeinfo.el, textmodes/page-ext.el, textmodes/picture.el:
* textmodes/refer.el, textmodes/spell.el, textmodes/table.el:
* textmodes/tex-mode.el, textmodes/two-column.el:
Remove leading `*' from docs of defcustoms etc.