devel-docs: updates and fixes

5 jobs for master in 77 minutes and 22 seconds (queued for 1 second)
Status Job ID Name Coverage
  Dependencies
passed #461527
deps-git

00:06:41

passed #461528
deps-x86_64-w64-mingw32

00:17:19

 
  Gimp
failed #461529
gimp-autotools

01:00:02

passed #461530
gimp-meson

00:10:17

passed #461531
gimp-x86_64-w64-mingw32-meson

00:17:46

 
Name Stage Failure
failed
gimp-autotools Gimp The script exceeded the maximum execution time set for the job
  CC       gimpgpparams.o
CC gimpinterpreterdb.o
CC gimpplugindebug.o
CC gimpplugin.o
CC gimpplugin-cleanup.o
CC gimpplugin-context.o
CC gimpplugin-message.o
Pulling docker image gitlab/gitlab-runner-helper:x86_64-a8a019e0 ...
ERROR: Job failed: execution took longer than 1h0m0s seconds