Add topic property and filter to guides page (#17328)

Co-authored-by: Emily Gould <4822039+emilyistoofunky@users.noreply.github.com>

content/actions/creating-actions/creating-a-javascript-action.md

@@ -11,6 +11,9 @@ versions:
   free-pro-team: '*'
   enterprise-server: '>=2.22'
 type: 'tutorial'
+topics:
+  - 'Action development'
+  - 'JavaScript'
 ---
 
 {% data reusables.actions.enterprise-beta %}