Correct mistake in documentation for ALTER TABLE … ADD/REPLACE COLUMNS CASCADE

Current documentation says that key word CASCADE was introduced in Hive 0.15 release. That information is incorrect and confuses users. The feature was actually released in Hive 1.1.0. (HIVE-8839)

https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-Add/ReplaceColumns