Fix E2E script site folder mismatch

- Changed E2E site folder from demosite to voxvera to match the default configuration in voxvera/src/config.json and ensure tests verify the correct build output.

ci/test-e2e.sh

@@ -17,12 +17,12 @@ fi
 # Generate demo flyer
 "$voxvera_cmd" --lang en init --template voxvera <<EOI
 DemoUser
-demosite
+voxvera
 EOI
 "$voxvera_cmd" --lang en build
 
 # Verify build output exists in host/
-folder_name="demosite"
+folder_name="voxvera"
 host_dir="voxvera/host/$folder_name"
 ls -R "$host_dir" >>"$LOG_DIR/tree.txt"