Merge pull request ceph#58007 from zdover23/wip-doc-2024-06-13-rados-operations

doc/rados: add pg-states and pg-concepts to tree

Author: anthonyeleven

doc/rados/operations/index.rst

@@ -39,6 +39,8 @@ CRUSH algorithm.
 	erasure-code
 	cache-tiering
 	placement-groups
+        pg-states
+        pg-concepts
 	upmap
         read-balancer
         balancer