修复 离线预警文字样式

src/main/java/com/yunfeiyun/agmp/iots/warn/util/WarnMessageBuilderUtil.java

@@ -58,7 +58,7 @@ public class WarnMessageBuilderUtil {
                 durationStr = String.format("已离线%d分钟", diffMinutes);
             }
 
-            String content = String.format("%s设备(%s)%s;", devName, devCode, durationStr);
+            String content = String.format("%s设备(%s)%s。", devName, devCode, durationStr);
             return content;
 
         } catch (Exception e) {