message: docs/dev/actor: misc improvements
diff: @@ -6,7 +6,7 @@ parent: Development
  # Actor model and agent subsystems
  -Zincati `agent` command provides a long-running background service which drives the OS through auto-updates.
  +The Zincati `agent` command provides a long-running background service which drives the OS through auto-updates.
  It comprises several logical subsystems which can run in parallel and are arranged following the [actor model][wiki-actors].
  The goal of this design is manifold:
  