Fixing icons?

Author: matklad

manual.adoc

@@ -2,14 +2,7 @@
 :toc: preamble
 :sectanchors:
 :page-layout: post
-// https://gist.github.com/dcode/0cfbf2699a1fe9b46ff04c41721dda74#admonitions
-:tip-caption: :bulb:
-:note-caption: :information_source:
-:important-caption: :heavy_exclamation_mark:
-:caution-caption: :fire:
-:warning-caption: :warning:
-
-
+:icons: font
 
 // Master copy of this document lives in the https://github.com/rust-analyzer/rust-analyzer repository