docs: update docs

docs/_config.yml

@@ -24,4 +24,23 @@ defaults:
 kramdown:
   syntax_highlighter_opts:
     block:
-      line_numbers: false
+      line_numbers: false
+
+color_scheme: nil
+
+callouts_level: quiet # or loud
+callouts:
+  highlight:
+    color: yellow
+  important:
+    title: Important
+    color: blue
+  new:
+    title: New
+    color: green
+  note:
+    title: Note
+    color: purple
+  warning:
+    title: Warning
+    color: red