docs: Official Xbox One support

Closes #1705

Change-Id: I16c2f2dece14dada5e67772c516c6e39de885519

README.md

@@ -39,7 +39,7 @@ For details on what's coming next, see our [development roadmap](roadmap.md).
 |Chromecast²| -        | -       | -       | -       | -        | -      |**Y**|
 |Tizen TV³  | -        | -       | -       | -       | -        | -      |**Y**|
 |WebOS⁶     | -        | -       | -       | -       | -        | -      |**Y**|
-|Xbox One⁶  | -        | -       | -       | -       | -        | -      |**Y**|
+|Xbox One   | -        | -       | -       | -       | -        | -      |**Y**|
 
 NOTES:
  - ¹: On macOS, only Safari 12+ is supported.  On iOS, only iOS 12+ is
@@ -54,10 +54,10 @@ NOTES:
    https://github.com/google/shaka-player/issues/2339)
  - ⁵: These are expected to work, but are not actively tested by the Shaka
    Player team.
- - ⁶: These are expected to work, WebOS and Xbox One are community supported
-   and untested by us. (Official support for LG WebOS TV:
-   https://github.com/google/shaka-player/issues/1330, Official support for
-   Xbox One: https://github.com/google/shaka-player/issues/1705)
+ - ⁶: These are expected to work, but are community-supported and untested by
+   us.
+     - Official support for LG WebOS TV:
+       https://github.com/google/shaka-player/issues/1330
 
 We support iOS 12+ through Apple's native HLS player.  We provide the same
 top-level API, but we just set the video's `src` element to the manifest/media.
@@ -155,7 +155,7 @@ HLS features **not** supported:
 |Chromecast|**Y**     |**Y**    | -       |untested⁵ |
 |Tizen TV  |**Y**     |**Y**    | -       |untested⁵ |
 |WebOS⁷    |untested⁷ |untested⁷| -       |untested⁷ |
-|Xbox One⁷ | -        |untested⁷| -       | -        |
+|Xbox One  | -        |**Y**    | -       | -        |
 
 Other DRM systems should work out of the box if they are interoperable and
 compliant to the EME spec.
@@ -173,8 +173,8 @@ NOTES:
    Player team.
  - ⁶: ClearKey is a useful tool for debugging, and does not provide actual
    content security.
- - ⁷: These are expected to work, WebOS and Xbox One are community supported
-   and untested by us.
+ - ⁷: These are expected to work, but are community-supported and untested by
+   us.
 
 |Manifest  |Widevine  |PlayReady|FairPlay |ClearKey  |
 |:--------:|:--------:|:-------:|:-------:|:--------:|