[wip] Try and see whether event display works in CI

.github/workflows/doctest.yaml

@@ -9,7 +9,8 @@ jobs:
       fail-fast: false
       matrix:
         SETUP: ['/cvmfs/sw-nightlies.hsf.org/key4hep/setup.sh']
-        PAGE: ['doc/starterkit/k4MarlinWrapperCLIC/Readme', ]
+        PAGE: ['doc/starterkit/k4MarlinWrapperCLIC/Readme',
+               'doc/starterkit/k4MarlinWrapperCLIC/CEDViaWrapper']
     steps:
     - uses: actions/checkout@v3
     - uses: cvmfs-contrib/github-action-cvmfs@v3
@@ -29,6 +30,7 @@ jobs:
         docker exec CI_container /bin/bash -c 'cd ./Package;
         source ${{ matrix.SETUP }};
         source build/k4marlinwrapperenv.sh;
+        export K4MARLINWRAPPER=${GITHUB_WORKSPACE}/k4MarlinWrapper/examples
         mkdir testdir;
         cat .github/scripts/yamlheader.md  ${{ matrix.PAGE }}.md > testdir/test.md;
         cd testdir;

doc/starterkit/k4MarlinWrapperCLIC/CEDViaWrapper.md

@@ -20,7 +20,7 @@ All the following steps assume that the environment is setup like above and that
 
 To create an input file for the event display we run a simple detector simulation using `ddsim` and a particle gun that shoots photons. The input file that we create here for illustration purposes has only 10 events, which also means that the creation should only take a few minutes. The steps to create this file are the following 
 
-```
+```bash
 ddsim --steeringFile CLICPerformance/clicConfig/clic_steer.py \
       --compactFile $LCGEO/CLIC/compact/CLIC_o3_v14/CLIC_o3_v14.xml \
       --enableGun \