Mention in the changelog that content-type support is now disabled by default

Author: bbatsov

CHANGELOG.md

@@ -20,6 +20,7 @@
 * [#2826](https://github.com/clojure-emacs/cider/pull/2826): Add support for symbols with quotes and resolving of ns-aliased keywords in `cider-symbol-at-point`.
 * [#2617](https://github.com/clojure-emacs/cider/pull/2617): Add menu bar entry for `Insert last sexp in REPL`.
 * Removed support for the Nashorn ClojureScript REPL. (it was removed upstream in ClojureScript)
+* [#2825](https://github.com/clojure-emacs/cider/issues/2825): Disable support for displaying images in the REPL. (set `cider-repl-use-content-types` to re-enable it)
 
 ### Bugs fixed