[test][storage] type must be text(blob). refs #1072

test/sql/groonga_storage/t/auto_increment_text.test

@@ -22,7 +22,7 @@ drop table if exists diaries;
 
 create table diaries (
   id int primary key auto_increment,
-  body varchar(256)
+  body text
 );
 insert into diaries (body) values ("started groonga (long text)");
 select * from diaries;