docs(typescript-types): Add missing links in README

packages/typescript-types/README.md

@@ -35,6 +35,8 @@ The types included in this library are categorized by their purpose.
 [`IsAny<T>`]: src/is-any.ts
 [`IsNever<T>`]: src/is-never.ts
 [`If<Test, TrueBranch, FalseBranch>`]: src/if.ts
+[`IsKeyOf<T, K>`]: src/is-key-of.ts
+[`IsEmptyString<S>`]: src/is-empty-string.ts
 
 #### Extraction Types
 
@@ -53,6 +55,7 @@ The types included in this library are categorized by their purpose.
 | [`KeyPath<T, Separator = '.'>`][] | Converts a `Separator` separated string into a tuple of its parts.                                   |
 | [`Simplify<T, E, I>`][]           | Maps types that extend `I` and not `E` to their properties. Helps diagnostic messages to be clearer. |
 
+[`KeyPath<T, Separator = '.'>`]: src/key-path.ts
 [`Simplify<T, E, I>`]: src/simplify.ts
 
 #### Combination Types