all: update repo to use the new error handling syntax (#8950)

tutorials/code/blog/blog.v

@@ -32,7 +32,7 @@ pub fn (app &App) index() vweb.Result {
 }
 
 pub fn (mut app App) init_once() {
-	app.db = sqlite.connect('blog.db') or { panic(err) }
+	app.db = sqlite.connect('blog.db') or { panic(err.msg) }
 	app.db.exec('create table if not exists article (' + 'id integer primary key, ' + "title text default ''," +
 		"text text default ''" + ');')
 }