README: fix broken contributing link (sql-js#473)

* README: fix broken contributing link

* CONTRIBUTING: fix numbered list

Author: nlepage

CONTRIBUTING.md

@@ -27,6 +27,7 @@ To get started:
 3. Open the repository folder in VSCode. It will detect the presence of a .devcontainer and prompt you: "Folder contains a Dev Container configuration file. Reopen folder to develop in a container." Click "Reopen in container"
 
 You're now ready to test the dev environment:
+
 4. Click on Terminal->New Terminal to be dropped into a terminal inside the dev environment.
 5. Run `$ npm install` to install the required modules
 6. Run `$ npm test` to ensure all tests pass

README.md

@@ -327,4 +327,4 @@ For each [release](https://github.com/sql-js/sql.js/releases/), you will find a
 
 General consumers of this library don't need to read any further. (The compiled files are available via the [release page](https://github.com/sql-js/sql.js/releases).)
 
-If you want to compile your own version of SQLite for WebAssembly, or want to contribute to this project, see [CONTRIBUTING.md](docs/CONTRIBUTING.md).
+If you want to compile your own version of SQLite for WebAssembly, or want to contribute to this project, see [CONTRIBUTING.md](CONTRIBUTING.md).