Migrate docs building also

.gitea/workflows/ci.yml

@@ -24,16 +24,10 @@ jobs:
         working-directory: ${{runner.workspace}}/build
         run: ctest . --output-on-failure
   Docs:
-      runs-on: ubuntu-latest
+      runs-on: fedora-cpp
       steps:
         - uses: actions/checkout@v3
 
-        - name: Prepare environment
-          run: |
-            apt update
-            apt install -y --no-install-recommends build-essential cmake ninja-build doxygen python3-sphinx python3 python3-pip
-            pip3 install breathe
-
         - name: Configure build
           working-directory: ${{runner.workspace}}
           run: |