PS-10085 MyRocks limitations section still showing the Online DDL limitation part

modified:   docs/limitations.md

Author: alina-derkach-oaza

docs/limitations.md

@@ -2,12 +2,20 @@
 
 The MyRocks storage engine lacks the following features compared to InnoDB:
 
-* [Online DDL](https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html) is not supported due to the lack of atomic DDL support.
+* [Online DDL](https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl.html) is generally **not supported** due to the lack of atomic DDL support.
 
-        * There is no `ALTER TABLE ... ALGORITHM=INSTANT` functionality
+    As of Percona Server for MySQL 8.0.42-33, a limited set of **Instant DDL operations** are supported in RocksDB, controlled by specific configuration options:
 
-        * A partition management operation only supports the `COPY` algorithms, which rebuilds the partition table and moves the data based on the new `PARTITION ... VALUE` definition. In the case of `DROP PARTITION`, the data not moved to another partition is deleted.
+    | Configuration Option                                         | Description                                      |
+    |--------------------------------------------------------------|--------------------------------------------------|
+    | `--rocksdb_enable_instant_ddl_for_append_column`             | Allows adding new columns at the end of the table |
+    | `--rocksdb_enable_instant_ddl_for_column_default_changes`    | Allows changing column default values             |
+    | `--rocksdb_enable_instant_ddl_for_drop_index_changes`        | Allows dropping indexes                           |
+    | `--rocksdb_enable_instant_ddl_for_table_comment_changes`     | Allows changing table comments                    |
 
+    * There is no `ALTER TABLE ... ALGORITHM=INSTANT` functionality
+
+    * A partition management operation only supports the `COPY` algorithms, which rebuilds the partition table and moves the data based on the new `PARTITION ... VALUE` definition. In the case of `DROP PARTITION`, the data not moved to another partition is deleted.
 
 * [ALTER TABLE .. EXCHANGE PARTITION](https://dev.mysql.com/doc/refman/8.0/en/partitioning-management-exchange.html).