message: docs: update readme examples
diff: @@ -15,16 +15,17 @@ npm install --save @stacks/bns
  ## Example Usage
  -```
  +```typescript
  import { canRegisterName } from '@stacks/bns';
  import { StacksTestnet } from '@stacks/network';
  const network = new StacksMainnet();
  -const result = await canRegisterName('name.id', network);
  +const fullyQualifiedName = 'name.id';
  +const result = await canRegisterName({ fullyQualifiedName, network });
  ```
  -```
  +```typescript
  import { buildRegisterNameTX } from '@stacks/bns';
  import { StacksTestnet } from '@stacks/network';
  