message: docs(known-issues): add "outdated" warning for section babel
diff: @@ -37,6 +37,8 @@ class SomeClass {
  ### Babel
  +<span class="badge badge--warning">This Section may be outdated</span>
  +
  Using babel as a TypeScript compiler is known to cause problems (like incorrect types), we recommened you use `tsc` directly, or `ts-node` or `ts-jest` for jest-testing.
  If Babel is still needed, then read [Babel TypeScript preset](https://babeljs.io/docs/en/babel-preset-typescript) and install the following plugins:
  