GTK reference docs: Some fixes
A few separate commits:
Last sentence terminator
Strangely, the input-gandling document's last sentence ended with a colon, giving the impression there's missing text that should follow. There is not.
Even more strange, it's always ended with a colon, ever since the document was converted to MarkDown from XML (in commit 10cd5391).
BUT, the XML file it was converted from ended that same sentence with a period! I have no idea where the colon came from. This MR changes it (back) to a period.
The actions document was affected in the same way, seemingly a bug in the conversion script. Also fixed there.
Keyboard-combo styling
A few keypress / keyboard-combo mentions that weren't included in f0a2d77e get <kbd>key</kbd>[+<kbd>key</kbd>]
styling.
Where that wrapping caused lines to grow longer than 80 characters, reformat the paragraph to use semantic newlines.
<kbd>␣</kbd>
with <kbd>Space</kbd>
Replace As I mentioned in a (post-merge) comment on f0a2d77e, I don't feel that <kbd>␣</kbd>
is adequately representative of the space bar. It's not labeled "␣" on any keyboard I've ever seen.