Update make-a-github-readme.mdx

Author: sonnynomnom

projects/make-a-github-readme/make-a-github-readme.mdx

@@ -59,7 +59,7 @@ Some things you can highlight:
 - Fun fact about yourself
 - Anything you want!
 
-READMEs are primarily written with **Markdown** - it's a way to format plain text and turn it into things like headers, formatted text (bold, italics, underlines), lists, or links!
+READMEs are primarily written with **Markdown** – it's a way to format plain text and turn it into things like headers, formatted text (bold, italics, underlines), lists, or links!
 
 Here's a quick guide on how to mark down your text: