Update database-schema.adoc

docs: match the database schema with https://github.com/spring-projects/spring-security/blob/6.5.0/docs/modules/ROOT/pages/servlet/authentication/passwords/jdbc.adoc

Signed-off-by: Lidoca <32785562+Lidoca@users.noreply.github.com>

docs/modules/ROOT/pages/servlet/appendix/database-schema.adoc

@@ -16,7 +16,7 @@ You can use these as a guideline for defining the schema for the database you us
 
 create table users(
 	username varchar_ignorecase(50) not null primary key,
-	password varchar_ignorecase(50) not null,
+	password varchar_ignorecase(500) not null,
 	enabled boolean not null
 );