修复TEL_400_800正则规则太窄问题（issue#3967@Github）

hutool-core/src/main/java/cn/hutool/v7/core/regex/PatternPool.java

@@ -105,8 +105,6 @@ public class PatternPool {
 	public final static Pattern TEL = Pattern.compile(RegexPool.TEL);
 	/**
 	 * 座机号码+400+800电话
-	 *
-	 * @see <a href="https://baike.baidu.com/item/800">800</a>
 	 */
 	public final static Pattern TEL_400_800 = Pattern.compile(RegexPool.TEL_400_800);
 	/**

hutool-core/src/main/java/cn/hutool/v7/core/regex/RegexPool.java

@@ -99,10 +99,8 @@ public interface RegexPool {
 	String TEL = "(010|02\\d|0[3-9]\\d{2})-?(\\d{6,8})";
 	/**
 	 * 座机号码+400+800电话
-	 *
-	 * @see <a href="https://baike.baidu.com/item/800">800</a>
 	 */
-	String TEL_400_800 = "0\\d{2,3}[\\- ]?[1-9]\\d{6,7}|[48]00[\\- ]?[1-9]\\d{2}[\\- ]?\\d{4}";
+	String TEL_400_800 = "0\\d{2,3}[\\- ]?[0-9]\\d{6,7}|[48]00[\\- ]?[0-9]\\d{2}[\\- ]?\\d{4}";
 	/**
 	 * 18位身份证号码
 	 */