Update network/domains-and-dns/concepts.mdx

Co-authored-by: Jessica <[email protected]>

Author: nerda-codes

network/domains-and-dns/concepts.mdx

@@ -14,7 +14,7 @@ categories:
 
 ## DNS
 
-**D**omain **N**ame **S**ystem is a name management system for computing devices connected to a network, be it public (Internet) or private. It translates text-based [domain names](#domain-name) to numerical IP addresses or other services such as emails.
+**D**omain **N**ame **S**ystem is a name management system for computing devices connected to a network, be it public (internet) or private. It translates text-based [domain names](#domain-name) to numerical IP addresses or other services such as emails.
 
 ## DNS namespace