Fix: changing import syntax slightly to ensure success with `create-n…

…ext-app` (#28431)

Just a small change to recently merged PR; for some reason `import couchbase from 'couchbase'` is not working correctly when I use create-next-app to bootstrap with the `with-couchbase` example, despite initially working within my local next.js directory. The wildcard import fixes that issue. Thanks!

## Documentation / Examples

- [x] Make sure the linting passes

examples/with-couchbase/util/couchbase.js

@@ -1,4 +1,4 @@
-import couchbase from 'couchbase'
+import * as couchbase from 'couchbase'
 
 const COUCHBASE_USER = process.env.COUCHBASE_USER
 const COUCHBASE_PASSWORD = process.env.COUCHBASE_PASSWORD