[教程类] 修复支持中文名字

搜索：

public class MapleCharacterUtil {

    private static final Pattern namePattern = Pattern.compile("[a-zA-Z0-9]{4,12}");
    private static final Pattern petPattern = Pattern.compile("[a-zA-Z0-9]{4,12}");

替换：

public class MapleCharacterUtil {

    private static final Pattern namePattern = Pattern.compile("^(?!_)(?!.*?_$)[a-zA-Z0-9_\\u4e00-\\u9fa5]+$");
    private static final Pattern petPattern = Pattern.compile("^(?!_)(?!.*?_$)[a-zA-Z0-9_\\u4e00-\\u9fa5]+$");