chore: Fix Storybook does not launch
I tried to start dev work but Storybook failed to launch with,
```
Error [ERR_REQUIRE_ESM]: require() of ES Module /repo/.storybook/main.js from /repo/figspec-react/node_modules/@storybook/core-common/dist/cjs/utils/interpret-require.js not supported.
```
This rename is the easiest and quickest fix I know of.