Fix capitalization, define acronym, and cross-link other docs

Author: RebeccaTamachiro

src/content/docs/ssl/edge-certificates/advanced-certificate-manager/index.mdx

@@ -50,7 +50,7 @@ Advanced certificates are not used with [Cloudflare Pages](/pages/) nor [R2](/r2
 
 Advanced certificates are [Domain Validated (DV)](/ssl/concepts/#validation-level). If your organization needs Organization Validated (OV) or Extended Validation (EV) certificates, refer to [Custom certificates](/ssl/edge-certificates/custom-certificates/). <br/>
 
-Advanced Certificates do not cover multiple different domains. For MDC, check the Cloudflare for SaaS product.
+Advanced certificates do not cover multiple different domains. For multi-domain certificate (MDC), consider the [Cloudflare for SaaS](/cloudflare-for-platforms/cloudflare-for-saas/) product. You can also find further guidance in [Leveraging Cloudflare for your SaaS applications](/reference-architecture/design-guides/leveraging-cloudflare-for-your-saas-applications/).
 
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