dependencies: update and clean (and auto-fix style issues) (#1195)

* Update npm dependencies (and auto-fix style issues)

* Updated Documentation in README.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

Maths/CollatzSequence.js

@@ -26,5 +26,5 @@ export function collatz (n) {
     steps.push(n)
   }
 
-  return { result: n, steps: steps }
+  return { result: n, steps }
 }