* which-key.el: Add two spaces in docstrings and punctation

* which-key.el: Add two spaces in docstrings and punctation

(which-key-echo-keystrokes):
(which-key-popup-type):
(which-key-min-display-lines):
(which-key-side-window-location):
(which-key-show-early-on-C-h):
(which-key-allow-regexps):
(which-key-group-description-face):
(which-key-docstring-face):
(which-key-enable-god-mode-support):
(which-key-setup-minibuffer):
(which-key-add-keymap-based-replacements):
(which-key--maybe-replace):
(which-key--maybe-add-docstring):
(which-key--get-keymap-bindings):
(which-key-reload-key-sequence):