Updated app日志查询 (markdown)

@@ -30,7 +30,7 @@
     ```json
 
         {
-          content: [
+          content: [        --查询返回的日志内容
             {
               id: "ADE2448AAAB638AC-1-156694619D0-200003595",
               appKey: "com.boxfishedu.teacher",
@@ -38,7 +38,7 @@
               deviceId: "14027cf72204aaa2f924c00f19456b4cbc5f3011",
               eventId: "1fac9fa9-252e-4922-bd29-75db79ca8fcb",
               type: "track",
-              properties: {
+              properties: {                ---埋点里的所有属性都在properties里
                 room_id: "312913222",
                 sys_app_release: "7.0.0",
                 sys_screen_height: 768,