change departname to department

zh/05.4.md

@@ -23,7 +23,7 @@ CREATE TABLE userinfo
 (
 	uid serial NOT NULL,
 	username character varying(100) NOT NULL,
-	departname character varying(500) NOT NULL,
+	department character varying(500) NOT NULL,
 	Created date,
 	CONSTRAINT userinfo_pkey PRIMARY KEY (uid)
 )
@@ -56,7 +56,7 @@ func main() {
 	checkErr(err)
 
 	//插入数据
-	stmt, err := db.Prepare("INSERT INTO userinfo(username,departname,created) VALUES($1,$2,$3) RETURNING uid")
+	stmt, err := db.Prepare("INSERT INTO userinfo(username,department,created) VALUES($1,$2,$3) RETURNING uid")
 	checkErr(err)
 
 	res, err := stmt.Exec("astaxie", "研发部门", "2012-12-09")