feat(阅知模块): 解决新增阅知content字段溢出

dev-user/src/main/java/com/tykj/dev/device/user/read/subject/domin/Message.java

@@ -42,6 +42,7 @@ public class Message {
     private Integer businessType;
 
     @ApiModelProperty(value = "信息内容")
+    @Column(name = "content",columnDefinition = "TEXT")
     private String content;
 
     @Column(name = "involve_users",columnDefinition = "TEXT")