Fix various typos in the documentation

Generally, the issues fixed here are missing articles, wrong articles
and double articles.  We especially like "the the".
77 jobs for !4498 with ondrej/fix-some-spelling in 18 minutes (queued for 10 seconds)
latest detached
Status Job ID Name Coverage
  Autoconf
passed #1367700
amd64 linux
autoreconf

00:00:21

 
  Precheck
passed #1367702
amd64 linux
clang-format

00:00:20

passed #1367703
amd64 linux
coccinelle

00:03:54

passed #1367781
linux amd64
danger

00:00:13

passed #1367701
amd64 linux
misc

00:00:21

passed #1367705
amd64 linux
tarball-create

00:02:03

failed #1367704
amd64 linux
danger

00:00:16

 
  Build
passed #1367718
amd64 linux
clang:asan

00:02:41

passed #1367722
amd64 linux
clang:buster:amd64

00:01:10

passed #1367725
amd64 libvirt
clang:freebsd11:amd64

00:01:20

passed #1367726
amd64 libvirt
clang:freebsd12:amd64

00:01:15

passed #1367727
amd64 libvirt
clang:openbsd:amd64

00:02:40

passed #1367720
amd64 linux
clang:tsan

00:01:48

passed #1367706
amd64 linux
gcc:alpine3.12:amd64

00:01:08

passed #1367717
amd64 linux
gcc:asan

00:02:10

passed #1367710
amd64 linux
gcc:buster:amd64

00:01:04

passed #1367707
amd64 linux
gcc:centos7:amd64

00:01:00

passed #1367708
amd64 linux
gcc:centos8:amd64

00:00:54

passed #1367716
amd64 linux
gcc:focal:amd64

00:01:09

passed #1367721
amd64 linux
gcc:mutexatomics

00:01:20

passed #1367712
amd64 linux
gcc:out-of-tree

00:01:02

passed #1367711
amd64 linux
gcc:sid:amd64

00:01:44

passed #1367713
i386 linux
gcc:sid:i386

00:01:10

passed #1367723
amd64 linux
gcc:softhsm2.4

00:00:53

passed #1367724
amd64 linux
gcc:softhsm2.6

00:01:16

passed #1367709
amd64 linux
gcc:stretch:amd64

00:01:09

passed #1367719
amd64 linux
gcc:tsan

00:01:26

passed #1367714
amd64 linux
gcc:tumbleweed:amd64

00:01:09

passed #1367715
amd64 linux
gcc:xenial:amd64

00:01:14

passed #1367728
amd64 windows
msvc:windows:amd64

00:00:54

 
  Unit
passed #1367740
amd64 linux
unit:clang:asan

00:01:22

passed #1367744
amd64 linux
unit:clang:buster:amd64

00:01:07

passed #1367747
amd64 libvirt
unit:clang:freebsd11:amd64

00:01:25

passed #1367748
amd64 libvirt
unit:clang:freebsd12:amd64

00:01:33

passed #1367749
amd64 libvirt
unit:clang:openbsd:amd64

00:02:59

passed #1367742
amd64 linux
unit:clang:tsan

00:02:46

passed #1367729
amd64 linux
unit:gcc:alpine3.12:amd64

00:01:11

passed #1367739
amd64 linux
unit:gcc:asan

00:01:18

passed #1367733
amd64 linux
unit:gcc:buster:amd64

00:02:18

passed #1367730
amd64 linux
unit:gcc:centos7:amd64

00:01:15

passed #1367731
amd64 linux
unit:gcc:centos8:amd64

00:01:08

passed #1367738
amd64 linux
unit:gcc:focal:amd64

00:01:10

passed #1367743
amd64 linux
unit:gcc:mutexatomics

00:01:10

passed #1367734
amd64 linux
unit:gcc:sid:amd64

00:01:13

passed #1367735
i386 linux
unit:gcc:sid:i386

00:01:12

passed #1367745
amd64 linux
unit:gcc:softhsm2.4

00:01:08

passed #1367746
amd64 linux
unit:gcc:softhsm2.6

00:01:05

passed #1367732
amd64 linux
unit:gcc:stretch:amd64

00:01:11

passed #1367741
amd64 linux
unit:gcc:tsan

00:04:23

passed #1367736
amd64 linux
unit:gcc:tumbleweed:amd64

00:01:05

passed #1367737
amd64 linux
unit:gcc:xenial:amd64

00:01:22

 
  System
passed #1367761
amd64 linux
system:clang:asan

00:13:07

passed #1367765
amd64 linux
system:clang:buster:amd64

00:11:51

passed #1367768
amd64 libvirt
system:clang:freebsd11:amd64

00:11:30

passed #1367769
amd64 libvirt
system:clang:freebsd12:amd64

00:11:28

passed #1367763
amd64 linux
system:clang:tsan

00:14:33

passed #1367750
amd64 linux
system:gcc:alpine3.12:amd64

00:12:25

passed #1367760
amd64 linux
system:gcc:asan

00:13:32

passed #1367754
amd64 linux
system:gcc:buster:amd64

00:12:55

passed #1367751
amd64 linux
system:gcc:centos7:amd64

00:12:08

passed #1367752
amd64 linux
system:gcc:centos8:amd64

00:12:16

passed #1367759
amd64 linux
system:gcc:focal:amd64

00:12:24

passed #1367764
amd64 linux
system:gcc:mutexatomics

00:11:31

passed #1367755
amd64 linux
system:gcc:sid:amd64

00:11:53

passed #1367756
i386 linux
system:gcc:sid:i386

00:12:30

passed #1367766
amd64 linux
system:gcc:softhsm2.4

00:11:53

passed #1367767
amd64 linux
system:gcc:softhsm2.6

00:12:13

passed #1367753
amd64 linux
system:gcc:stretch:amd64

00:11:39

passed #1367762
amd64 linux
system:gcc:tsan

00:15:15

passed #1367757
amd64 linux
system:gcc:tumbleweed:amd64

00:12:14

passed #1367758
amd64 linux
system:gcc:xenial:amd64

00:11:24

 
  Docs
passed #1367770
amd64 linux
docs

00:00:49

 
  Postcheck
passed #1367774
amd64 linux
cppcheck

00:00:56

passed #1367771
amd64 linux
flake8

00:00:35

passed #1367775
amd64 linux
gcov

00:00:32

77.0%
passed #1367772
amd64 linux
pylint

00:00:32

passed #1367773
amd64 linux
scan-build

00:05:07