Update index.mdx

Author: dcpena

src/content/docs/fundamentals/index.mdx

@@ -12,7 +12,7 @@ import { Render } from "~/components";
 
 <Render file="what-is-cloudflare" product="fundamentals" />
 
-Before you get started, we recommend reviewing [Concepts](/fundamentals/concepts/) to learn about key concepts related to using different Cloudflare products.
+Before you get started, we recommend reviewing [Concepts](/fundamentals/concepts/) to learn about key concepts related to using different Cloudflare products.  
 
 ## Additional resources