[MINOR] docs(flink): fix flink paimon document (#6323)

### What changes were proposed in this pull request?

rename `paimon_tabla_a ` to `paimon_table_a`

### Why are the changes needed?

table name is wrong.


### Does this PR introduce _any_ user-facing change?

no

### How was this patch tested?

just document

docs/flink-connector/flink-catalog-paimon.md

@@ -66,7 +66,7 @@ SET 'execution.runtime-mode' = 'batch';
 SET 'sql-client.execution.result-mode' = 'tableau';
 -- [INFO] Execute statement succeed.
 
-CREATE TABLE paimon_tabla_a (
+CREATE TABLE paimon_table_a (
     aa BIGINT,
     bb BIGINT
 );