Fixed appstore docs link (#21098)

Author: Amruta-Ranade

docusaurus/docusaurus.config.js

@@ -41,6 +41,10 @@ const config = {
  from: '/integrations/sources/google-analytics-data-api',
  to: '/integrations/sources/google-analytics-v4',
  },
+ {
+ from: '/integrations/sources/appstore',
+ to: '/integrations/sources/appstore-singer',
+ },
  {
  from: '/project-overview/security',
  to: '/operator-guides/security',