docs: Update comment regarding pluginName in full example (#81)
docs: Update comment regarding pluginName in full example (#81)

After these changes: https://github.com/babel-utils/babel-plugin-tester/commit/91c22ecc29598db2a99b16df29d986087e9cd1b4
It's no longer true that `pluginName` is unnecessary
babel-utils/babel-plugin-tester,babel-utils/babel-plugin-tester