feature: Update links to the explorer

[elboletaire]

Describe the feature

With the complete revamp of the explorer, all routes receiving params have been changed. We should update any explorer links in the explorer and its docs to properly point to the new ones.

Note

Even though the SDK code itself may not have links pointing there, we have lots of examples and documentation where we might be pointing to the old urls.

See vocdoni/ui-scaffold#740 for a full list of the routes that have potentially changed.

Note the explorer will have support for old routes, so this won't be required immediately, but it would be good to do it as soon as the LTS explorer has been finally deployed (see vocdoni/explorer#81 for a follow-up on this).

[marcvelmer]

URLs are the same, there are no routes in the SDK

[elboletaire]

This was to review all readmes and examples (I should have been more clear, sorry for that), I see some links in the examples...

https://github.com/vocdoni/vocdoni-sdk/blob/main/examples/tutorial/src/vote.ts#L13