fix provider typo (#84)

DATAMODEL.md

@@ -27,7 +27,7 @@ An Attribute is a piece of data associated with an event. Attributes provide add
 
 | Attribute Name | Description |
 |---|---|
-| instrumentation.provider | Always “media”. |
+| instrumentation.provider | Always “newrelic”. |
 | instrumentation.name | Always “roku”. |
 | instrumentation.version | Agent’s version. |
 | newRelicAgent | Always “RokuAgent”. |
@@ -287,4 +287,4 @@ An Attribute is a piece of data associated with an event. Attributes provide add
 | isPlaylist | Content is a playlist. Boolean. |
 | videoFormat | Video format, a mime type. |
 | timeSinceBufferBegin | Time since video last video buffering began, in milliseconds. |
-| timeSincePaused | Time since the video was paused, in milliseconds. |
+| timeSincePaused | Time since the video was paused, in milliseconds. |