Fix over-wide doc strings

Fix over-wide doc strings

* lisp/vc/ediff-init.el (ediff-before-flag-bol)
(ediff-after-flag-eol, ediff-before-flag-mol):
* lisp/org/org-ctags.el (org-ctags-open-link-functions):
* lisp/mail/feedmail.el (feedmail-sendmail-f-doesnt-sell-me-out):
* lisp/language/ethio-util.el (ethio-use-three-dot-question)
(ethio-quote-vowel-always, ethio-W-sixth-always):
* lisp/gnus/nnvirtual.el (nnvirtual-mapping-table)
(nnvirtual-mapping-offsets, nnvirtual-mapping-reads)
(nnvirtual-mapping-marks, nnvirtual-info-installed):
* lisp/gnus/gnus.el (charset):
* lisp/gnus/deuglify.el (gnus-outlook-deuglify-unwrap-stop-chars)
(gnus-outlook-deuglify-no-wrap-chars)
(gnus-outlook-deuglify-attrib-cut-regexp): Fix doc strings to not
exceed 80-column limits.  (Bug#44858)