fix: Remove https from domain and default delegationNetwork to mainnet

[ChaituVR]

Fixes https://github.com/snapshot-labs/workflow/issues/253

How to test

• In src/helpers/poke.ts comment the code that checks validation: (until we merge fix: Allow https in domain snapshot.js#1074)

// if (snapshot.utils.validateSchema(snapshot.schemas.space, space) !== true) {
    //   return Promise.reject('invalid space format');
    // }

• Open http://localhost:3001/spaces/cow.eth/poke
• Should save space settings without any error (domain should be saved as vote.cow.fi)
• In src/helpers/actions.ts add delete settings.domain on line 10
• Open http://localhost:3001/spaces/cowtesting.eth/poke
• Should save space settings without any error

[wa0x6e]

Swapping these 2 lines would have allowed using just delegationNetwork: '1'