dark mode octocat icon on COVID post (and fix AMP errors)

https://search.google.com/search-console/amp/drilldown?resource_id=https%3A%2F%2Fjarv.is%2F&item_key=GhUIIhADIgNpbWciB2FtcC1pbWcolk4&hl=en&sharing_key=jrQsA5DhNhUqwYxUooGbfw

archetypes/notes/index.md

@@ -6,7 +6,9 @@ tags:
   - 
 image: ""
 css: |
-  
+  div#content {
+    
+  }
 aliases:
   - 
 draft: true