org: run a spell checker on the documentation

* doc/org/autcross.org, doc/org/autfilt.org, doc/org/citing.org,
doc/org/compile.org, doc/org/concepts.org, doc/org/csv.org,
doc/org/dstar2tgba.org, doc/org/genaut.org, doc/org/genltl.org,
doc/org/hierarchy.org, doc/org/hoa.org, doc/org/index.org,
doc/org/install.org, doc/org/ltl2tgba.org, doc/org/ltl2tgta.org,
doc/org/ltlcross.org, doc/org/ltlfilt.org, doc/org/ltlgrind.org,
doc/org/ltlsynt.org, doc/org/oaut.org, doc/org/randaut.org,
doc/org/randltl.org, doc/org/satmin.org, doc/org/tut.org,
doc/org/tut01.org, doc/org/tut02.org, doc/org/tut03.org,
doc/org/tut04.org, doc/org/tut10.org, doc/org/tut11.org,
doc/org/tut12.org, doc/org/tut20.org, doc/org/tut21.org,
doc/org/tut22.org, doc/org/tut23.org, doc/org/tut24.org,
doc/org/tut30.org, doc/org/tut31.org, doc/org/tut50.org,
doc/org/tut51.org, doc/org/tut52.org, doc/org/tut90.org,
doc/org/upgrade2.org: Run ispell-buffer on all these.
* bin/autfilt.cc, python/spot/__init__.py: Fix typos in
help texts noticed while spell-checking the org files.
9 jobs for adl/for-master in 118 minutes and 53 seconds (queued for 55 minutes and 51 seconds)
Status Name Job ID Coverage
  Build
passed alpine-gcc #100061

00:49:27

passed arch-clang #100062

00:51:13

passed arch-gcc-glibcxxdebug #100063

01:14:16

passed debian-gcc-snapshot #100060

01:07:29

passed debian-stable-gcc #100058

00:48:31

passed debian-unstable-gcc-coverage #100059

00:40:34

90.6%
passed mingw-shared #100064

00:10:15

passed mingw-static #100065

00:08:45

passed raspbian #100066
armv7

01:25:28