Fix formatting and path in joke action YAML

Author: EAliatis

.github/actions/joke-action/action.yml

@@ -1,10 +1,10 @@
-name: "my joke action"
-description: "use an external API to retrieve and display a joke"
+name: 'my joke action'
+description: 'use an external API to retrieve and display a joke'
 
 outputs:
   joke-output:
-    description: "The resulting joke from the icanhazdadjokes API"
+    description: 'The resulting joke from the icanhazdadjokes API'
 
-runs: 
+runs:
   using: node16
-  main: main.js
+  main: ./main.js