test(sveltekit-cloudflare): rename e2e test dir to tests

To match other e2e apps

Author: SG60

dev-packages/e2e-tests/test-applications/sveltekit-cloudflare-pages/playwright.config.ts

@@ -6,5 +6,5 @@ export default defineConfig({
     port: 4173
   },
 
-  testDir: 'e2e'
+  testDir: 'tests'
 });