ci: Update GitLab URLs and improve example.

Signed-off-by: Simon Josefsson <simon@josefsson.org>

Author: jas4711

web/docs/ci.md

@@ -42,19 +42,20 @@ see https://github.com/marketplace/actions/setup-msys2
 
 ## GitLab
 
-GitLab offers [shared Windows runners](https://docs.gitlab.com/ee/ci/runners/hosted_runners/windows.html)
-with some [pre-installed software](https://gitlab.com/gitlab-org/ci-cd/shared-runners/images/gcp/windows-containers/blob/main/cookbooks/preinstalled-software/README.md)
+GitLab offers [shared Windows runners](https://docs.gitlab.com/ci/runners/hosted_runners/windows/)
+with some [pre-installed software](https://gitlab.com/gitlab-org/ci-cd/shared-runners/images/gcp/windows-containers/-/blob/main/cookbooks/preinstalled-software/attributes/default.rb)
 and you can build a project using the following `.gitlab-ci.yml`
 snippet, which illustrates how to build a regular autotools-based
-project.  See [GitLab's CI/CD documentation](https://docs.gitlab.com/ee/topics/build_your_application.html)
+project.  See [GitLab's CI/CD documentation](https://docs.gitlab.com/topics/build_your_application/)
 for general reference on CI/CD in GitLab.
 
 ```yaml
 Windows-MSYS2-UCRT64:
-  # https://docs.gitlab.com/ee/ci/runners/saas/windows_saas_runner.html
+  # https://docs.gitlab.com/ci/runners/hosted_runners/windows/
   tags: [ saas-windows-medium-amd64 ]
   script: # https://www.msys2.org/docs/ci/#gitlab
-  - wget.exe -nv -O msys2.exe https://github.com/msys2/msys2-installer/releases/download/nightly-x86_64/msys2-base-x86_64-latest.sfx.exe
+  - wget.exe -nv -O msys2.exe https://github.com/msys2/msys2-installer/releases/download/2025-02-21/msys2-base-x86_64-20250221.sfx.exe # https://github.com/msys2/msys2-installer/releases/download/nightly-x86_64/msys2-base-x86_64-latest.sfx.exe
+  - Get-FileHash ./msys2.exe -Algorithm SHA256 | Format-List
   - ./msys2.exe -y -oC:\
   - Remove-Item msys2.exe
   - $env:CHERE_INVOKING = 'yes'
@@ -68,6 +69,7 @@ Windows-MSYS2-UCRT64:
     ./bootstrap
     ./configure
     make V=1 check VERBOSE=t'
+  - C:\msys64\usr\bin\bash -lc 'grep ^PASS tests/basic.log'
 ```
 
 ## Appveyor