Fix link to list of media types

Shredder121 · Shredder121 · commit 144ca9356c0f · 2016-02-05T09:52:33.000+01:00
Since [Media Type revision 671520376][1] (15 July 2015) the list has been removed. This links to a more authorative source. [1]: https://en.wikipedia.org/w/index.php?title=Media_type&oldid=671520376
diff --git a/content/v3/repos/releases.md b/content/v3/repos/releases.md
@@ -171,7 +171,7 @@ asset's name and label in URI query parameters.
 
 Name | Type | Description
 -----|------|--------------
-`Content-Type`|`string` | **Required**. The content type of the asset. This should be set in the Header. Example: `"application/zip"`. For a list of acceptable types, refer this list of [common media types](http://en.wikipedia.org/wiki/Internet_media_type#List_of_common_media_types).
+`Content-Type`|`string` | **Required**. The content type of the asset. This should be set in the Header. Example: `"application/zip"`. For a list of acceptable types, refer this list of [media types][media type list].
 `name`|`string` | **Required**. The file name of the asset. This should be set in a URI query parameter.
 `label`|`string` | An alternate short description of the asset. Used in place of the filename. This should be set in a URI query parameter.
 
@@ -239,4 +239,5 @@ Name | Type | Description
 
 <%= headers 204 %>
 
+[media type list]: https://www.iana.org/assignments/media-types/media-types.xhtml
 [repo tags api]: /v3/repos/#list-tags
