Generated markdown issue with spec at section 3.8.2.2

> When a parameter type annotation specifies a string literal ty�����pe, the containing signature is a specialized signature (section 3.8.2.4).

See [3.8.2.2](https://github.com/Microsoft/TypeScript/blob/7ee698c450e8317651ecb102534b0601da5ecb9f/doc/spec.md#3822-parameter-list)
