ci(docs): fix typo on outDir path when building docs

docs/.gitlab-ci.yml

@@ -40,7 +40,7 @@ build-production:
     name: production
     url: https://docs.castopod.org/
   script:
-    - pnpm run build --outDir=docs/.dist/$CI_COMMIT_REF_SLUG --base=$CI_COMMIT_REF_SLUG
+    - pnpm run build --outDir=docs/dist/$CI_COMMIT_REF_SLUG --base=$CI_COMMIT_REF_SLUG
   artifacts:
     paths:
       - docs/dist/$CI_COMMIT_REF_SLUG