Update interactivity.md (#1410)

#1403

i18n/ja/docusaurus-plugin-content-docs/current/mediastore/enhancements/interactivity.md

@@ -1,19 +1 @@
----
-sidebar_position: 2
-sidebar_label: Interactivity
-title: Stream interactivity
-description: Learn how to implement various layers of interactivity between viewers of your streaming content
-hide_title: true
-keywords:
-  - momento
-  - mediastore
-  - zero buffer rate
-  - zbr
-  - streaming
-  - live
-  - elemental
-  - serverless
-  - metrics
-  - overlay
-  - interactivity
----
+