Fix grammar errors in middleware-auto-error and events-global-serial docs

Generated-By: mintlify-agent

Author: mintlify[bot]

docs/concurrency/events-global-serial.mdx

@@ -4,7 +4,7 @@ description: Process only one event at a time across all buses.
 ---
 
 `global-serial` enforces a single global event-processing slot across all `EventBus` instances.
-Note: that global lock is scoped to the `EventBus` class; if you need separate global lock domains, subclass `EventBus`.
+Note that the global lock is scoped to the `EventBus` class; if you need separate global lock domains, subclass `EventBus`.
 
 Companion runnable example:
 - [`examples/concurrency_options.py`](https://github.com/ArchiveBox/abxbus/blob/main/examples/concurrency_options.py)

docs/integrations/middleware-auto-error.mdx

@@ -24,7 +24,7 @@ bus = EventBus(
 ## Behavior
 
 - Runs on completed handler results.
-- If a handler errored, emits a auto event with:
+- If a handler errored, emits an auto event with:
   - `event_type`: `{OriginalEventType}ErrorEvent`
   - `error`: original exception
   - `error_type`: exception class name