[doc] trigger readthedocs build on successful build

.gitlab-ci.yml

@@ -35,3 +35,8 @@ trigger-other-pipelines:
   stage: after-tests
   script:
   - "if [ -z \"${TRIGGERED_FROM_OTHER_PROJECT}\" ]; then curl -X POST -F token=$CUBICWEB_PIPELINE_TRIGGER_TOKEN -F ref=branch/default https://forge.extranet.logilab.fr/api/v4/projects/385/trigger/pipeline; fi"
+
+trigger-readthedocs:
+  stage: after-tests
+  script:
+  - "if [ -z \"${TRIGGERED_FROM_OTHER_PROJECT}\" ]; then curl -X POST -d \"token=${READTHEDOCS_TOKEN}\" https://readthedocs.org/api/v2/webhook/yams/109442/; fi"