docs: Update docs README (#16352)

bpmutter · web-flow · commit f6d57fb657c2 · 2022-09-27T10:05:41.000+02:00
Add more detailed setup information to the docs README.
diff --git a/docs/README.md b/docs/README.md
@@ -1,11 +1,25 @@
 # ESLint Documentation
 
+## Install Dependencies
+
+Install the necessary dependencies for the documentation site by running this
+from the `docs` folder:
+
+```shell
+npm install
+```
+
 ## Run Locally
 
+Run this from the `docs` folder:
+
 ```shell
 npm start
 ```
 
+Once the script finishes building the documentation site, you can visit it at
+<http://localhost:2023>.
+
 ## Scripts
 
 To update the links data file, run this from the root folder (not the `docs` folder):
