Apply suggestions from code review and PM request

Author: RebeccaTamachiro

src/content/docs/dns/dns-firewall/analytics.mdx

@@ -56,7 +56,7 @@ The filters and time frame that you specify at the top of the page apply to all
 
 		<Details header="90th percentile (p90)"> Aside from the average for both processing and response times, `p90` values show you the maximum time that 90% of queries took to resolve. For example, if the p90 is 1 millisecond, it means 90% of the queries were resolved in 1 millisecond or less.</Details>
 
-- **DNS queries by data center**: a map indicating which Cloudflare data centers have handled DNS queries to your account. You can also find a list of the ten top results and quickly filter for or exclude a certain data center from the results by hovering over it and selecting **Filter** or **Exclude**.
+- **DNS queries by data center**: a map indicating which Cloudflare data centers have handled DNS queries to your account. You can also find a list of the top ten results and quickly filter for or exclude a certain data center from the results by hovering over it and selecting **Filter** or **Exclude**.
 
 - **Top query statistics**: a breakdown of the top queries grouped by the [available dimensions](#available-dimensions). You can expand each card to list more results and search for specific values.
 
@@ -98,4 +98,4 @@ The following table provides a description for each of the values that might be
 | `unknown`                 | There was an unknown error.                                                                                                                                    |
 
 [^1]: the total time taken to handle a query within DNS Firewall.
-[^2]: the time it takes when an answer is not cache and Cloudflare has to get the answer from your upstream nameservers.
+[^2]: the time it takes when an answer is not cached and Cloudflare has to get the answer from your upstream nameservers.

src/content/docs/dns/dns-firewall/setup.mdx

@@ -30,6 +30,7 @@ Prior to setting up DNS Firewall, you need:
 
    <DashButton url="/?to=/:account/dns-firewall" />
 
+2. Go to **Clusters**.
 3. Select **Add Firewall Cluster**.
 4. Fill out the required fields, including:
    - **IP Addresses**: The upstream IPv4 and/or IPv6 addresses of your authoritative nameservers.