docs ~ fix TS example to work with fully-specified imports and ts-node

# Discussion

`ts-node`, for 'reasons', doesn't currently support the TypeScripts import "magic"
extension search logic. Discussion and experimentation is on-going and may be added in the
future.[^1] For now, as a working replacement, reference the CJS compiled/distributed code
directly instead of the TypeScript source code in the TS example.

# refs

[1]: TypeStrong/ts-node#783

eg/show-paths.ts

@@ -1,4 +1,4 @@
-import osPaths from '../src';
+import osPaths from '../dist/cjs/index.js'; // ## maint: [2021-02-07; rivy] await resolution of <https://github.com/TypeStrong/ts-node/issues/783> to return to direct TS import
 
 /* eslint-disable no-console , functional/immutable-data , security/detect-object-injection, security-node/detect-crlf , @typescript-eslint/no-explicit-any */