Fix typo and reword index.mdx meta description

Author: RebeccaTamachiro

src/content/docs/ssl/post-quantum-cryptography/index.mdx

@@ -7,7 +7,7 @@ sidebar:
   group:
     label: Post-quantum
 head: []
-description: Consider information about how Cloudflare is implementing post-quantum cryptography to protect you against store now, decrypt later.
+description: Get an overview of how Cloudflare is implementing post-quantum cryptography to protect you against store now, decrypt later.
 ---
 
 For years, Cloudflare has been researching and [writing about post quantum](https://blog.cloudflare.com/tag/post-quantum/).

src/content/docs/ssl/post-quantum-cryptography/pqc-to-origin.mdx

@@ -5,5 +5,5 @@ sidebar:
   order: 2
   label: PQC to your origin
 head: []
-description: Learn how to enabled post-quantum cryptography in connections from Cloudflare to your origin servers.
+description: Learn how to enable post-quantum cryptography in connections from Cloudflare to your origin servers.
 ---