DOCS - H2 database table upgrade notes from 3.0 to 3.2 fix - related …

…to CORDA-1804. (#3654)

* Reassign the release version V3.0 to require running different SQL upgrade - related to CORDA-1804.

* Reassign the release version V3.0 to require running different SQL upgrade - related to CORDA-1804 - missing comma.

* Remove instruction for db upgrade from release candidates.

docs/source/upgrade-notes.rst

@@ -44,18 +44,12 @@ Database schema changes
 ^^^^^^^^^^^^^^^^^^^^^^^
 
 * Database upgrade - a typo has been corrected in the ``NODE_ATTACHMENTS_CONTRACTS`` table name.
-When upgrading from version 3.1, run the following command:
+When upgrading from versions 3.0 or 3.1, run the following command:
 
 .. sourcecode:: sql
 
    ALTER TABLE [schema].NODE_ATTCHMENTS_CONTRACTS RENAME TO NODE_ATTACHMENTS_CONTRACTS;
 
-When upgrading from version 3.0, run the following command:
-
-.. sourcecode:: sql
-
-   ALTER TABLE [schema].NODE_ATTACHMENTS_CONTRACT_CLASS_NAME RENAME TO NODE_ATTACHMENTS_CONTRACTS;
-
 Schema name is optional, run SQL when the node is not running.
 
 * Postgres database upgrade - Change the type of the ``checkpoint_value`` column to ``bytea``.