docs: Fix many style problems in man pages
-
\+
is not a valid escape sequence in any *roff known to be in use on Linux (or anywhere else as far as GBR knows). - Convert multibyte UTF-8 sequences into groff character escape sequences (also supported by Heirloom Doctools troff and mandoc(1)).
- Fix damage to tbl(1) table in ps(1); tabs in the "environ" table entry had been replaced with a space, ruining the table format.
Fixes: troff:./man/ps.1:217: warning: escape character ignored before '+' troff:./man/ps.1:1600: warning: invalid input character code 128 troff:./man/ps.1:1600: warning: invalid input character code 148 troff:./man/ps.1:1965: warning: invalid input character code 128 troff:./man/ps.1:1965: warning: invalid input character code 148 ./man/ps.1:1000: warning: table column separation reduced to zero