Update CHANGELOG and pleroma_api.md

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ## [Unreleased]
 ### Added
 - Refreshing poll results for remote polls
+- Job queue stats to the healthcheck page
 - Admin API: Add ability to require password reset
 
 ### Changed

docs/api/pleroma_api.md

@@ -317,7 +317,8 @@ See [Admin-API](Admin-API.md)
   "active": 0, # active processes
   "idle": 0, # idle processes
   "memory_used": 0.00, # Memory used
-  "healthy": true # Instance state
+  "healthy": true, # Instance state
+  "job_queue_stats": {} # Job queue stats
 }
 ```