Tidy links, and lint (#2435)

Tidies up a number of things:

- Outdated links that redirect
- Dead links
- Remove unnecessary parameters eg "en" and "en-US"
- Shortened amazon, apps.apple.com, reddit links
- Removed trailing /
- Remove www (except for PG assets)
- Optimize unoptimized SVGs and remove xml declarations
- Lint yaml, md files

Co-Authored-By: Daniel Gray <dngray@privacyguides.org>

docs/index.md

@@ -8,7 +8,7 @@ hide:
   - toc
   - feedback
 schema:
-  - 
+  -
     "@context": https://schema.org
     "@type": Organization
     "@id": https://www.privacyguides.org/
@@ -22,7 +22,7 @@ schema:
       - https://opencollective.com/privacyguides
       - https://www.youtube.com/@privacyguides
       - https://mastodon.neat.computer/@privacyguides
-  - 
+  -
     "@context": https://schema.org
     "@type": WebSite
     name: Privacy Guides
@@ -61,7 +61,7 @@ Trying to protect all your data from everyone all the time is impractical, expen
 
 ## We need you! Here's how to get involved:
 
-[:simple-discourse:](https://discuss.privacyguides.net/){ title="Join our Forum" }
+[:simple-discourse:](https://discuss.privacyguides.net){ title="Join our Forum" }
 [:simple-mastodon:](https://mastodon.neat.computer/@privacyguides){ rel=me title="Follow us on Mastodon" }
 [:material-book-edit:](https://github.com/privacyguides/privacyguides.org){ title="Contribute to this website" }
 [:material-translate:](https://matrix.to/#/#pg-i18n:aragon.sh){ title="Help translate this website" }