docs: Simplify Typescript instructions

[NicholasBoll]

Remove the /support in the import instructions removes the need to modify the tsconfig.json file.

While following the instructions, I noticed the package.json has a main entry that points to the support.js file while the types points to the index.d.ts file. Removing the /support from the instructions removes the need to modify the "types" in the tsconfig.json file. It makes everything simpler.