Add ALTER TABLE ADD ... FIRST to help.csv

h2/src/docsrc/help/help.csv

@@ -285,7 +285,7 @@ ALTER SEQUENCE SEQ_ID RESTART WITH 1000
 "Commands (DDL)","ALTER TABLE ADD","
 ALTER TABLE [ IF EXISTS ] tableName ADD [ COLUMN ]
 { [ IF NOT EXISTS ] columnName columnDefinition | ( { columnName columnDefinition } [,...] ) }
-[ { BEFORE | AFTER } columnName ]
+[ { { BEFORE | AFTER } columnName } | FIRST ]
 ","
 Adds a new column to a table.
 This command commits an open transaction in this connection.