User/Org Feed render description as per web (#23887)

User descriptions should be rendered so that links and other markup
appear correct in RSS feeds.

build.go

@@ -1,7 +1,6 @@
 // Copyright 2020 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-
 //go:build vendor
 
 package main