(bookmark-automatically-show-annotations, bookmark-read-annotation-text-func): Doc...

(bookmark-automatically-show-annotations, bookmark-read-annotation-text-func): Doc fixes.
(bookmark-save): Improve argument/docstring consistency.
(bookmark-get-bookmark, bookmark-get-bookmark-record,
bookmark-alist-from-buffer, bookmark-upgrade-file-format-from-0,
bookmark-grok-file-format-version, bookmark-maybe-upgrade-file-format,
bookmark-kill-line, bookmark-read-annotation-mode,
bookmark-insert-current-bookmark, bookmark-jump, bookmark-exit-hook):
Fix typos in docstrings.
(bookmark-exit-hooks): Define as obsolete alias.
(bookmark-exit-hook-internal): Run `bookmark-exit-hook',
not `bookmark-exit-hooks'.  Fix docstring.
(bookmark-bmenu-select): "?\ " -> "?\s".