message: Better explanation of jest-environment docblock
  * Better explanation of jest-environment docblock
  Fixes Thanks for considering.
  * Fix backtick in Configuration.md
  * Fix linter issue in Configuration.md
diff: @@ -830,8 +830,8 @@ Jest is a browser-like environment through
  [jsdom](https://github.com/tmpvar/jsdom). If you are building a node service,
  you can use the `node` option to use a node-like environment instead.
  -If some tests require another environment, you can add a `@jest-environment`
  -docblock.
  +By adding a `@jest-environment` docblock at the top of the file, you can specify
  +another environment to be used for all tests in that file:
  ```js
  /**
  