Fix typo

proposals/2881-message-attachments.md

@@ -144,7 +144,7 @@ and JSON of `content` field:
     "msgtype": "m.text",
     "body": "Here is my photos and videos from yesterday event\nAttachments:\nhttps://example.com/_matrix/media/r0/download/example.com//KUAQOesGECkQTgdtedkftISg\nhttps://example.com/_matrix/media/r0/download/example.com/0f4f88120bfc9183d122ca8f9f11faacfc93cd18",
     "format": "org.matrix.custom.html",
-    "formatted_body": "<p>Here is my photos and videos from yesterday event</p>\n<div class=\"mx-attachments\"><p>Attachments:</p>\n<ul>\n<li><a href="https://example.com/_matrix/media/r0/download/example.com//KUAQOesGECkQTgdtedkftISg">Image 1.jpg</a></li>\n<li><a href="https://example.com/_matrix/media/r0/download/example.com/0f4f88120bfc9183d122ca8f9f11faacfc93cd18">Video 2.mp4</a></li>\n</ul></div>"
+    "formatted_body": "<p>Here is my photos and videos from yesterday event</p>\n<div class=\"mx-attachments\"><p>Attachments:</p>\n<ul>\n<li><a href=\"https://example.com/_matrix/media/r0/download/example.com//KUAQOesGECkQTgdtedkftISg\">Image 1.jpg</a></li>\n<li><a href=\"https://example.com/_matrix/media/r0/download/example.com/0f4f88120bfc9183d122ca8f9f11faacfc93cd18\">Video 2.mp4</a></li>\n</ul></div>"
   }
 ```
 If [MSC2398: proposal to allow mxc:// in the "a" tag within messages](https://github.com/matrix-org/matrix-doc/pull/2398) will be merged before this, we can replace `http` urls to direct `mxc://` urls, for support servers, that don't allow downloads without authentication and have other restrictions.