Remove spurious * in docstrings.

Remove spurious * in docstrings.
(woman-mini-help, woman-non-underline-faces, woman0-rename)
(woman-topic-all-completions-merge, woman-file-name-all-completions)
(woman-select-symbol-fonts, woman-expand-directory-path): Use dolist.
(woman-write-directory-cache, woman-display-extended-fonts)
(WoMan-log-begin, WoMan-log-1): Use with-current-buffer.
(woman-really-find-file): Use pop-to-buffer if switch-to-buffer fails.
(woman-mode): Use inhibit-read-only.
(woman-negative-vertical-space): Use dotimes.
(woman2-tagged-paragraph, woman-tab-to-tab-stop): Use insert-char.