修复REGEX匹配不完整情况

Author: chenfeng

json-diff-test/src/main/java/me/codeleep/jsondiff/test/utils/FormatContent.java

@@ -14,7 +14,7 @@
  * @description: 格式化内容
  */
 public class FormatContent {
-    private static final String REGEX = "[a-zA-Z]+(\\.[a-zA-Z]+)+";
+    private static final String REGEX = "[a-zA-Z]+(\\.[a-zA-Z0-9]+)+";
     private static final Pattern pattern = Pattern.compile(REGEX);
 
     /**