fix(测试跟踪): 修复同步Jira缺陷描述展示的问题

--bug=1014749 --user=宋昌昌 【测试跟踪】github#15532 本地部署jira，同步缺陷后,缺陷描述只展示图片，未展示文字 https://www.tapd.cn/55049933/s/1211375

backend/src/main/java/io/metersphere/track/issue/JiraPlatform.java

@@ -111,6 +111,7 @@ public class JiraPlatform extends AbstractIssuePlatform {
             return description;
         }
 
+        description = description.replaceAll("!image", "\n!image");
         String[] splitStrs = description.split("\\n");
         for (int j = 0; j < splitStrs.length; j++) {
             String splitStr = splitStrs[j];