Updated backup docs

docs/BACKUP.md

@@ -9,20 +9,12 @@
 <!-- toc -->
 - [Storage types](#storage-types)
 - [<code>Backup</code> CR](#backup-cr)
-    - [Scheduling](#scheduling)
-    - [Retention policy](#retention-policy)
 - [<code>Restore</code> CR](#restore-cr)
-    - [Target recovery time](#target-recovery-time)
 - [Bootstrap new <code>MariaDB</code> instances](#bootstrap-new-mariadb-instances)
 - [Backup and restore specific databases](#backup-and-restore-specific-databases)
 - [Extra options](#extra-options)
-- [Important considerations](#important-considerations)
-- [Galera backup limitations](#galera-backup-limitations)
-    - [<code>mysql.global_priv</code>](#mysqlglobal_priv)
-    - [<code>LOCK TABLES</code>](#lock-tables)
+- [Important considerations and limitations](#important-considerations-and-limitations)
 - [Migrating to a <code>MariaDB</code> with different topology](#migrating-to-a-mariadb-with-different-topology)
-    - [Migrating between standalone and replicated <code>MariaDBs</code>](#migrating-between-standalone-and-replicated-mariadbs)
-    - [Migrating from standalone/replicated to Galera <code>MariaDBs</code>](#migrating-from-standalonereplicated-to-galera-mariadbs)
 - [Minio reference installation](#minio-reference-installation)
 - [Reference](#reference)
 <!-- /toc -->
@@ -320,7 +312,7 @@ spec:
 
 Refer to the `mariadb-dump` and `mariadb` CLI options in the [reference](#reference) section.
 
-## Important considerations
+## Important considerations and limitations
 
 #### Root credentials
 
@@ -348,7 +340,7 @@ spec:
           memory: 1Gi
 ``` 
 
-## Galera backup limitations
+#### Galera backup limitations
 
 #### `mysql.global_priv`