CI: Add missing mdependency

.woodpecker.yml

@@ -4,6 +4,8 @@ pipeline:
   test:
     image: python
     commands:
+      - apt-get update
+      - apt-get install -y hunspell hunspell-fr-comprehensive
       - python3 -m pip install -r requirements.txt
       - sphinx-lint --enable all --disable line-too-long *.po */*.po
       - pospell -p dict -l fr_FR *.po */*.po