Updated all the Portal Hardware Wallet specs on the website.

- 135 x 65 x 5 mm, 30g
- OLED Screen / 0.91" / 126 x 64 px
- Mainnet, Testnet, Signet and Regtest support
- Firmware upgraded through NFC
- Open source: https://github.com/TwentyTwoHW/portal-hardware
- Alphanumeric PIN entered via mobile app
- 12/24 words support
- Taproot addresses support
- Miniscript and mutisig support

and more.