adds a redirect from old launchdarkly doc link to new path (#11589)

Author: edwardgou-sentry

redirects.js

@@ -665,6 +665,10 @@ const userDocsRedirects = [
     source: '/platforms/react-native/manual-setup/codepush/',
     destination: '/platforms/react-native/sourcemaps/uploading/codepush/',
   },
+  {
+    source: '/organization/integrations/launchdarkly/',
+    destination: '/organization/integrations/feature-flag/launchdarkly/',
+  },
 ];
 
 /**