docs: apply some trivial redirects

These were found by using the linkcheck builder.

Reviewed-by: Corentin Noël <corentin.noel@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25585>

docs/ci/docker.rst

@@ -3,7 +3,7 @@ Docker CI
 
 For LLVMpipe and Softpipe CI, we run tests in a container containing
 VK-GL-CTS, on the shared GitLab runners provided by `freedesktop
-<https://freedesktop.org>`__
+<https://www.freedesktop.org>`__
 
 Software architecture
 ---------------------

docs/ci/index.rst

@@ -107,7 +107,7 @@ non-redistributable traces can request permission to Daniel Stone <daniels@colla
 
 gitlab.freedesktop.org accounts that are to be granted access to these traces will be
 added to the OPA policy for the MinIO repository as per
-https://gitlab.freedesktop.org/freedesktop/helm-gitlab-config/-/commit/a3cd632743019f68ac8a829267deb262d9670958 .
+https://gitlab.freedesktop.org/freedesktop/helm-gitlab-infra/-/commit/a3cd632743019f68ac8a829267deb262d9670958 .
 
 So the jobs are created in personal repositories, the name of the user's account needs
 to be added to the rules attribute of the GitLab CI job that accesses the restricted

docs/codingstyle.rst

@@ -84,8 +84,8 @@ Add this to your ``.emacs`` to automatically format any C & C++ file
 If ``/usr/share/clang/clang-format.el`` doesn't exist, look through the
 files in the package providing ``clang-format`` in your distro. If you
 can't find anything (eg. on Debian/Ubuntu), refer to `this StackOverflow
-answer <https://stackoverflow.com/a/59850773>`__ to install clang-format
-through Emacs instead.
+answer <https://stackoverflow.com/questions/59690583/how-do-you-use-clang-format-on-emacs-ubuntu/59850773#59850773>`__
+to install clang-format through Emacs instead.
 
 git ``pre-commit`` hook
 ***********************

docs/drivers/llvmpipe.rst

@@ -223,7 +223,7 @@ Recommended Reading
 -  Rasterization
 
    -  `Triangle Scan Conversion using 2D Homogeneous
-      Coordinates <https://www.csee.umbc.edu/~olano/papers/2dh-tri/>`__
+      Coordinates <https://redirect.cs.umbc.edu/~olano/papers/2dh-tri/>`__
    -  `Rasterization on
       Larrabee <https://www.drdobbs.com/parallel/rasterization-on-larrabee/217200602>`__
    -  `Rasterization using half-space

docs/drivers/zink.rst

@@ -324,7 +324,7 @@ Vulkan Validation Layers
 ^^^^^^^^^^^^^^^^^^^^^^^^
 
 Another useful tool for debugging is the `Vulkan Validation Layers
-<https://github.com/KhronosGroup/Vulkan-ValidationLayers/blob/master/README.md>`__.
+<https://github.com/KhronosGroup/Vulkan-ValidationLayers/blob/main/README.md>`__.
 
 The validation layers effectively insert extra checking between Zink and the
 Vulkan driver, pointing out incorrect usage of the Vulkan API. The layers can

docs/egl.rst

@@ -160,7 +160,7 @@ EGL Drivers
    This driver can share DRI drivers with ``libGL``.
 
 ``haiku``
-   This driver supports only the `Haiku <https://haiku-os.org>`__
+   This driver supports only the `Haiku <https://www.haiku-os.org/>`__
    platform. It is also much less feature-complete than ``egl_dri2``,
    supporting only part of EGL 1.4 and none of the extensions beyond it.