hgrc.5: fix quoting of literal strings...
hgrc.5: fix quoting of literal strings
The quotes would go wrong in many places due to differences between
asciidoc version 8.2.7 used by Benoit and 8.4.5 used by me. Between
those versions asciidoc stopped interpreting the content of `quoted
strings`, and so `*` would start bold text in the old version, but do
nothing in the new version.
To complicate things further, `\*` would escape the bold tag in the
old version, but in the new version the backslash was inserted
literally into the output (because the backtick quotes it).
I've now replaced backticks with non-quoting plusses and escaped
backslashes as appropriate.