Fix sentences in design paper

[hboon]

These lines:

• [ ] Token build the join between different providers and services, which are used to be built by accounts, trust and paperwork.
• [ ] Token enable a more flexible, even programmable, use of ownership rights and their interaction, as centralised, account-based services can provide.
• [ ] To access a market users can, but most not be on a marketplace like Amazon
• [ ] Essentially this means that both blockchain and web functions must join in Tokenscript, which enables it to integrate it
• [ ] Most token don't even try to be more than a surplacement for the payment side.

[SmartLayer]

@theBergmann must cross this.