scaffolder: apply review fixes

Co-authored-by: Johan Haals <johan.haals@gmail.com>
Co-authored-by: Fredrik Adelöw <freben@gmail.com>
Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

plugins/scaffolder-common/.eslintrc.js

@@ -1,3 +1,3 @@
 module.exports = {
-  extends: [require.resolve('@backstage/cli/config/eslint.backend')],
+  extends: [require.resolve('@backstage/cli/config/eslint')],
 };