CI: keep only the Fable review of task PRs

.github/workflows/DocPreviewCleanup.yml

@@ -3,8 +3,8 @@ name: Doc Preview Cleanup
 on:
   pull_request:
     types: [closed]
-  # claude-pipeline.yml merges with github.token, whose PR close triggers nothing:
-  # it dispatches this workflow with the PR number instead
+  # by hand, for a PR whose close did not trigger the cleanup (e.g. one merged
+  # with github.token)
   workflow_dispatch:
     inputs:
       pr:

.github/workflows/Documentation.yml

@@ -20,8 +20,7 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  # Not watched by claude-pipeline.yml and not a required check: a red docs
-  # build does not hold a task PR. The examples run on CUDA, hence the GPU runner.
+  # Not a required check: a red docs build does not hold a task PR. The examples run on CUDA, hence the GPU runner.
   docs:
     name: Build documentation
     runs-on: [self-hosted, linux, X64, gpu, cuda]