message: One last docs update to clarify new architecture.
diff: @@ -140,8 +140,9 @@ techdocs:
  # be configured with a valid cache store.
  cache:
  # Represents the number of milliseconds a statically built asset should
  - # stay cached. Cache invalidation is handled automatically if you publish
  - # to storage using the techdocs-cli, allowing long TTLs (e.g. 1 month/year)
  + # stay cached. Cache invalidation is handled automatically by the frontend,
  + # which compares the build times in cached metadata vs. canonical storage,
  + # allowing long TTLs (e.g. 1 month/year)
  ttl: 3600000
  # (Optional) The time (in milliseconds) that the TechDocs backend will wait
  