media-type: clarify that we have MIME-compatible media types

Signed-off-by: Stephen J Day <[email protected]>

Author: stevvooe

media-types.md

@@ -1,6 +1,6 @@
 # Media Types
 
-The following `mediaType` MIME types are used by the formats described here, and the resources they reference:
+The following media types identify the formats described here and their referenced resources:
 
 - `application/vnd.oci.descriptor.v1+json`: [Content Descriptor](descriptor.md)
 - `application/vnd.oci.image.manifest.list.v1+json`: [Manifest list](manifest.md#manifest-list)