updated code snippets in connect configurations

I have updated code snippets from the Connect Configuration and Migration pages. The WormholeConnect component was imported incorrectly.

[x] Required - I have added a label to this PR 🏷️
[x] Required - I have run my changes through Grammarly
[ ] If pages have been moved, I have created redirects in the wormhole-mkdocs repo

wormhole-foundation / wormhole-docs