Deployment examples (#6528)

* Updated examples index

* Exposed example subsections, and docs parent links in nav

* Fixed links

* Update Navigation.tsx

* Fixed Noviny's suggestions

* Lint fix

Co-authored-by: Thomas Walker <bladey@me.com>

docs/components/docs/GitHubExamplesCTA.tsx

@@ -25,7 +25,7 @@ export function GitHubExamplesCTA() {
         target="_blank"
         rel="noopener noreferrer"
       >
-        Keystone GitHub Repo <ArrowR />
+        Keystone GitHub repo <ArrowR />
       </Button>
     </Alert>
   );

docs/pages/docs/examples.tsx

@@ -2,7 +2,6 @@
 /** @jsx jsx */
 import { jsx } from '@emotion/react';
 
-import { Examples } from '../../components/docs/ExamplesList';
 import { GitHubExamplesCTA } from '../../components/docs/GitHubExamplesCTA';
 import { Type } from '../../components/primitives/Type';
 import { DocsPage } from '../../components/Page';
@@ -43,7 +42,7 @@ export default function Docs() {
 
       <Type as="p" look="body18" margin="1.25rem 0 1.5rem 0">
         Simple starters to get you up and running with a local Keystone instance and understand the
-        basics of designing{' '}
+        basics of designing a{' '}
         <Link href="/docs/apis/schema" passHref>
           <a>schema</a>
         </Link>{' '}