added helpful feedback & bumps copyright

mkdocs.yml

@@ -12,7 +12,7 @@ repo_url: https://github.com/ExpressLRS/ExpressLRS/releases/
 edit_uri: "https://github.com/ExpressLRS/Docs/tree/master/docs/"
 
 # Copyright
-copyright: Copyright © 2021-2023 ExpressLRS
+copyright: Copyright © 2021-2024 ExpressLRS
 
 # Configuration
 theme:
@@ -97,6 +97,20 @@ extra:
   analytics:
     provider: google
     property: G-VMF2B5BYJZ
+    feedback:
+      title: Was this page helpful?
+      ratings:
+        - icon: material/emoticon-happy-outline
+          name: This page was helpful
+          data: 1
+          note: >-
+            Thanks for your feedback!
+        - icon: material/emoticon-sad-outline
+          name: This page could be improved
+          data: 0
+          note: >-
+            Thanks for your feedback! Help us improve this page by
+            using our <a href="https://discord.gg/expresslrs" target="_blank" rel="noopener">discord server</a>!
   consent:
     title: Cookie consent
     description: >-