Use YASnippet highlighting for readme code-samples

Author: Alhadis

README.md

@@ -28,15 +28,19 @@ This is not an exhaustive list, but are the most useful.
 This is primarily used for create snippet aliases. A snippet alias if a snippet
 that will expand another snippet when used. e.g.
 
-```emacs-lisp
-;;; in js-mode/class
+**In `js-mode/class`:**
+
+```yasnippet
 # name: class
 # --
 class ${1:Name} {
  $0
 }
+```
+
+**In `js-mode/cl`:**
 
-;;; in js-mode/cl
+```yasnippet
 # name: class
 # key: cl
 # type: command
@@ -60,7 +64,7 @@ Returns `FORMAT`, which is a format string with a custom spec:
 
 An example of its use:
 
-```text
+```yasnippet
 # -*- mode: snippet -*-
 # name: while ... { ... }
 # key: while
@@ -95,7 +99,7 @@ Preforms `BODY` after moving the point to the start of the trigger keyword.
 Without this, tests like `bolp` would meaninglessly fail because the cursor is
 always in front of the word that triggered this snippet.
 
-``` text
+``` yasnippet
 # -*- mode: snippet -*-
 # name: .to_string()
 # key: ts
@@ -118,4 +122,4 @@ function aliases for your convenience:
 
 
 [yasnippet]: https://github.com/capitaomorte/yasnippet
-[Doom Emacs]: https://github.com/hlissner/doom-emacs
+[Doom Emacs]: https://github.com/hlissner/doom-emacs