HTTP_mirror_pool.md

@@ -107,7 +107,7 @@ Improves:
 
 Actions:
 
- - Incrementally remove existing unreliable mirrors from the pool:
+ - [x] Document how to incrementally remove existing unreliable mirrors from the pool:
    - Permanently remove mirrors that had problems at least twice in the last 6 months.
    - Remove mirrors that expose red flags such as:
      - We're faster than the mirror operator to notice breakage on their side.