add label for versining of spec and OS version

_search-plugins/ubi/index.md

@@ -7,6 +7,13 @@ redirect_from:
   - /search-plugins/ubi/
 ---
 # Overview
+
+**Introduced 2.15**
+{: .label .label-purple }
+
+**References UBI Draft Specification X.Y.Z**
+{: .label .label-purple }
+
 User Behavior Insights, or UBI, is a community plugin for capturing client-side events and queries for the purposes of improving search relevance and user experience.
 It is a causal system, linking a user's query to all subsequent user interactions with your application until they perform another search.
 
@@ -21,14 +28,14 @@ TODO: link a client implementation [here](#TODO-clients-link)
 <!-- vale off -->
 
 | Explanation & Reference | Description
-| :---------: | :-------: |
-| [UBI Request/Response Specification](https://github.com/o19s/ubi/) | Schema standard for making UBI requests and responses  |
+| :--------- | :------- |
+| [UBI Request/Response Specification](https://github.com/o19s/ubi/) **References UBI Draft Specification X.Y.Z**  | Schema standard for making UBI requests and responses  |
 | [UBI OpenSearch Schema Documentation]({{site.url}}{{site.baseurl}}/search-plugins/ubi/schemas/) | Documentation on the individual Query and Event stores for OpenSearch |
 | [`query_id` Data Flow]({{site.url}}{{site.baseurl}}/search-plugins/ubi/query_id/) | How the `query_id` ties the search to results and user events |
 
 
 | Tutorials & How-to Guides | Description
-| :---------: | :-------: |
+| :--------- | :------- |
 | [UBI Plugin Admin]({{site.url}}{{site.baseurl}}/search-plugins/ubi/documentation/) | How to install and use the UBI Plugin |
 | [ JavaScript client structures ]({{site.url}}{{site.baseurl}}/search-plugins/ubi/data-structures/)  | Sample JavaScript structures for populating the Event store |
 | [UBI SQL queries ]({{site.url}}{{site.baseurl}}/search-plugins/ubi/sql-queries/)  | How to write analytic queries for UBI data in SQL |