Doc: Add DELETE ORPHAN-FILES example to Hive page

[ebyhr]

Relates to apache/hive#4897

Tested with apache/hive:4.0.1:

0: jdbc:hive2://localhost:10000/> ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES;
INFO  : Compiling command(queryId=hive_20250101074601_ee489833-e643-4cc9-9c0d-338192d5270f): ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES
INFO  : Semantic Analysis Completed (retrial = false)
INFO  : Created Hive schema: Schema(fieldSchemas:null, properties:null)
INFO  : Completed compiling command(queryId=hive_20250101074601_ee489833-e643-4cc9-9c0d-338192d5270f); Time taken: 0.03 seconds
INFO  : Concurrency mode is disabled, not creating a lock manager
INFO  : Executing command(queryId=hive_20250101074601_ee489833-e643-4cc9-9c0d-338192d5270f): ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES
INFO  : Starting task [Stage-0:DDL] in serial mode
INFO  : Completed executing command(queryId=hive_20250101074601_ee489833-e643-4cc9-9c0d-338192d5270f); Time taken: 0.061 seconds
No rows affected (0.101 seconds)

0: jdbc:hive2://localhost:10000/> ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES OLDER THAN ('2021-12-09 05:39:18.689000000');
INFO  : Compiling command(queryId=hive_20250101075012_80a3545a-8dab-4441-8e02-b572b503ccf3): ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES OLDER THAN ('2021-12-09 05:39:18.689000000')
INFO  : Semantic Analysis Completed (retrial = false)
INFO  : Created Hive schema: Schema(fieldSchemas:null, properties:null)
INFO  : Completed compiling command(queryId=hive_20250101075012_80a3545a-8dab-4441-8e02-b572b503ccf3); Time taken: 0.028 seconds
INFO  : Concurrency mode is disabled, not creating a lock manager
INFO  : Executing command(queryId=hive_20250101075012_80a3545a-8dab-4441-8e02-b572b503ccf3): ALTER TABLE employee EXECUTE DELETE ORPHAN-FILES OLDER THAN ('2021-12-09 05:39:18.689000000')
INFO  : Starting task [Stage-0:DDL] in serial mode
INFO  : Completed executing command(queryId=hive_20250101075012_80a3545a-8dab-4441-8e02-b572b503ccf3); Time taken: 0.044 seconds
No rows affected (0.08 seconds)