refactor(shortcodes): update contributors grid to use v2 API (#17)

Signed-off-by: belloibrahv <[email protected]>

content/heros/index.md

@@ -9,4 +9,4 @@ Each contributor brings unique skills and ideas, helping us grow as a decentrali
 
 If you want to contribute to Hiero, please check out our current [Hacktoberfest initiative](/hacktoberfest) that provides a lot of good first issues to get started with.
 
-{{< contributorsGrid endpoint="https://hedera-issues.koyeb.app/api/contributors">}}
+{{< contributorsGrid endpoint="https://hedera-issues.koyeb.app/api/v2/contributors">}}

layouts/shortcodes/contributorsGrid.html

@@ -27,7 +27,7 @@
     });
   }
 
-  // Load issues on page load
+  // Load contributors on page load
   document.addEventListener('DOMContentLoaded', async () => {
     const loadingElement = document.getElementById('loading');
     const listElement = document.getElementById('contributors-list');