[DNS] Remove outdated domains list screenshot (#16794)

* Fix notes from DNS tile that ended up 'undefined' after migration

* Remove outdated image and replace by written description

Author: RebeccaTamachiro

src/assets/images/dns/subdomain-zone.png

@@ -45,10 +45,11 @@ curl --request PUT https://api.cloudflare.com/client/v4/zones/{zone_id}/custom_n
 }'
 ```
 
-:::undefined
+:::note
 
 If the parameter `ns_type` is omitted, the default type `account` will be assigned.
-If the parameter `ns_set` is omitted, the default set `1` will be assigned. 
+
+If the parameter `ns_set` is omitted, the default set `1` will be assigned.
 :::
 
 2. If you are **not** using [Cloudflare Registrar](/registrar/), update the nameservers at your registrar to use the TCNS names. If you are using [Cloudflare Registrar](/registrar/), no further action is needed.

src/content/docs/dns/nameservers/custom-nameservers/tenant-custom-nameservers.mdx

@@ -8,15 +8,12 @@ sidebar:
 
 import { DirectoryListing, FeatureTable, GlossaryTooltip } from "~/components"
 
-When you use a subdomain setup, you can manage the [Cloudflare configurations](/fundamentals/concepts/how-cloudflare-works/) for one or more subdomains separately from those associated with your <GlossaryTooltip term="apex domain">apex domain</GlossaryTooltip>.
+When you use a subdomain setup, you can manage the [Cloudflare configurations](/fundamentals/concepts/how-cloudflare-works/) for one or more subdomains separately from those associated with your <GlossaryTooltip term="apex domain">apex domain</GlossaryTooltip>. This means that, on your [account homepage](https://dash.cloudflare.com/?to=/:account/), you would find websites like `example.com` or `blog.example.com` listed as separate <GlossaryTooltip term="DNS zone">zones</GlossaryTooltip>.
 
-:::undefined
-
-This is different from simply creating a subdomain for a site you already have in Cloudflare. If you do not need separate Cloudflare configuration for your subdomain, refer to [Create a subdomain record](/dns/manage-dns-records/how-to/create-subdomain/). 
+:::note
+This is different from simply creating a subdomain for a site you already have in Cloudflare. If you do not need separate Cloudflare configuration for your subdomain, refer to [Create a subdomain record](/dns/manage-dns-records/how-to/create-subdomain/).
 :::
 
-![Screenshot showing a zone with a parent domain and a child subdomain](~/assets/images/dns/subdomain-zone.png)
-
 You might use this setup when you want to share access to a specific subdomain's settings with different teams, but have stricter controls on your apex domain. For example, a subdomain setup could allow your documentation team to manage the Cloudflare configuration for `docs.example.com`, while preventing them from adjusting any settings on `example.com`.
 
 Subdomain setups are also useful when different subdomains require entirely different settings. For example, you may have different requirements for `docs.example.com`, `blog.example.com`, and `community.example.com`.

src/content/docs/dns/zone-setups/subdomain-setup/index.mdx

@@ -5,7 +5,7 @@ inputParameters: param1;;param2
 
 import { Markdown } from "~/components"
 
-:::undefined
+:::note
 
-{props.one} owners that want to [use their own IP prefix](/byoip/) for the {props.two} custom nameservers should contact their account team. 
+{props.one} owners that want to [use their own IP prefix](/byoip/) for the {props.two} custom nameservers should contact their account team.
 :::