[PATCH] doc: build: docker: Fix code-block formatting

[Leonard Anderweit <l.anderweit@phytec.de>]

Remove double : before code-block. While at it, use code-block for all
bash commands.

Signed-off-by: Leonard Anderweit <l.anderweit@phytec.de>
---
 doc/build/docker.rst | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/doc/build/docker.rst b/doc/build/docker.rst
index 01ed35050908..4974a98d4af5 100644
--- a/doc/build/docker.rst
+++ b/doc/build/docker.rst
@@ -12,7 +12,9 @@ You will need a multi-platform container, otherwise this error is shown::
     ERROR: Multi-platform build is not supported for the docker driver.
     Switch to a different driver, or turn on the containerd image store, and try again.
 
-You can add a simple one with::
+You can add a simple one with:
+
+.. code-block:: bash
 
     sudo docker buildx create --name multiarch --driver docker-container --use
 
@@ -20,7 +22,9 @@ This will result in a builder that will use QEMU for the non-native
 architectures request in a build.  While both amd64 and arm64 happen in
 parallel, the non-native part will take considerably longer as it must use QEMU
 to emulate the foreign code.  An alternative, if you have accesss to reasonably
-fast amd64 (i.e. 64-bit x86) and arm64 machines is::
+fast amd64 (i.e. 64-bit x86) and arm64 machines is:
+
+.. code-block:: bash
 
     sudo docker buildx create --name multiarch-multinode --node localNode --bootstrap --use
     sudo docker buildx create --name multiarch-multinode --append --node remoteNode --bootstrap ssh://user@host
@@ -28,7 +32,7 @@ fast amd64 (i.e. 64-bit x86) and arm64 machines is::
 And this will result in a builder named multiarch-multinode that will build
 each platform natively on each node.
 
-To build the image yourself::
+To build the image yourself:
 
 .. code-block:: bash
 
-- 
2.34.1