Tweak doc of `analyze-text-conversion` vs `post-self-insert-hook`

* lisp/simple.el (analyze-text-conversion): Fix typo.

* lisp/progmodes/cc-mode.el (c-initialize-cc-mode): Add comment about
`post-text-conversion-hook`.
10 jobs for master in 102 minutes and 55 seconds (queued for 7 seconds)
Status Job ID Name Coverage
  Build Images
passed #78188
build-image-inotify

01:02:24

 
  Normal
failed #78189
test-all-inotify

00:40:29

 
  Platform Images
failed #78190
build-image-eglot

00:05:47

failed #78192
build-image-gnustep

00:04:47

passed #78191
build-image-tree-sitter

01:02:36

 
  Platforms
skipped #78193
test-eglot
skipped #78195
test-gnustep
passed #78194
test-tree-sitter

00:01:38

 
  Native Comp Images
failed #78196
build-native-comp-speed2

00:05:42

 
  Native Comp
skipped #78197
test-native-comp-speed2
 
Name Stage Failure
failed
test-all-inotify Normal
$ find ${test_name} ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} \) -type f -delete
$ find ${test_name} -type d -depth -exec rmdir {} + 2>/dev/null
Uploading artifacts...
test-all-inotify-213d30b3/: found 538 matching files
Uploading artifacts to coordinator... ok
id=78189 responseStatus=201 Created token=nHx-HyMq
Uploading artifacts...
test-all-inotify-213d30b3/junit-test-report.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=78189 responseStatus=201 Created token=nHx-HyMq
ERROR: Job failed: exit code 2
failed
build-image-eglot Platform Images
context canceled
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
$ find ${test_name} ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} \) -type f -delete
find: build-image-eglot-213d30b3: No such file or directory
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1

failed
build-native-comp-speed2 Native Comp Images
 > [internal] load build context:
------
rpc error: code = Unavailable desc = transport is closing
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
$ find ${test_name} ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} \) -type f -delete
find: build-native-comp-speed2-213d30b3: No such file or directory
ERROR: Job failed: exit code 1
failed
build-image-gnustep Platform Images
rpc error: code = Canceled desc = grpc: the client connection is closing
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
find: build-image-gnustep-213d30b3: No such file or directory
$ find ${test_name} ! \( -name "*.log" -o -name ${EMACS_TEST_JUNIT_REPORT} \) -type f -delete
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 1