Apply suggestions from code review

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

Author: nerda-codes

network/domains-and-dns/how-to/manage-nameservers-internal-domain.mdx

@@ -15,7 +15,7 @@ categories:
 
 Scaleway Domains and DNS provides a managed DNS solution by providing default name servers for each domain name. If you want to use your own DNS servers, you can edit the name servers associated with your domain name.
 
-When adding name servers with Domains and DNS, you must ensure that they are [resolvable](/network/domains-and-dns/concepts/#domain-name-resolution) in the DNS. To achieve this, you need to have created [A](/network/domains-and-dns/reference-content/understanding-dns-records/#a-record) and/or [AAAA](/network/domains-and-dns/reference-content/understanding-dns-records/#aaaa-record) records for each name server. These records link the name server's domain name (for example `ns0.mydomain.com`) to its corresponding IP address.
+When adding name servers with Domains and DNS, you must ensure that they are [resolvable](/network/domains-and-dns/concepts/#domain-name-resolution) in the DNS. Each name server must have [A](/network/domains-and-dns/reference-content/understanding-dns-records/#a-record) and/or [AAAA](/network/domains-and-dns/reference-content/understanding-dns-records/#aaaa-record) records. These records link the name server's domain name (for example `ns0.mydomain.com`) to its corresponding IP address.
 
 This is a critical step, especially when configuring [glue records](/network/domains-and-dns/concepts/#glue-record), which are necessary for resolving domain names in cases where the name servers are within the same domain.