Use the hardhat.config.js to extend the HRE

docs/advanced/hardhat-runtime-environment.md

@@ -57,7 +57,7 @@ Hardhat lets you hook into the HRE construction, and extend it with new function
 
 You can do this by adding an HRE extender into a queue. This extender is just a synchronous function that receives the HRE and adds fields to it with your new functionality. These new fields will also get [injected into the global scope during runtime](#exporting-globally).
 
-For example, adding an instance of [Web3.js](https://web3js.readthedocs.io/en/latest/) to the HRE can be done in this way:
+For example, adding an instance of [Web3.js](https://web3js.readthedocs.io/en/latest/) to the HRE can be done by installing the `web3` package and adding the following to your `hardhat.config.js`:
 
 ```js
 extendEnvironment((hre) => {