fix wrong code block language

Author: mProjectsCode

src/content/docs/guides/stylingAndCSS.mdx

@@ -43,7 +43,7 @@ If you want to change the style of a specific button, you can specify a CSS clas
 
 First we create a button and specify a custom class, in this case `green-button`.
 
-```meta-bind
+```yaml
 style: primary
 label: Open Meta Bind FAQ
 class: green-button