Remove duplicate site build instructions (#4824)

README.md

@@ -64,13 +64,7 @@ npm run test -- -g transition
 
 ## svelte.dev
 
-The source code for https://svelte.dev, including all the documentation, lives in the [site](site) directory. The site is built with [Sapper](https://sapper.svelte.dev). To develop locally:
-
-```bash
-cd site
-npm install && npm run update
-npm run dev
-```
+The source code for https://svelte.dev, including all the documentation, lives in the [site](site) directory. The site is built with [Sapper](https://sapper.svelte.dev).
 
 ### Is svelte.dev down?
 

site/README.md

@@ -1,24 +1,33 @@
 ## Running locally
 
-Set up the project:
+Set up the site sub-project:
 
 ```bash
 git clone https://github.com/sveltejs/svelte.git
-cd svelte
-npm ci
-PUBLISH=1 npm run build
 cd site
 npm ci
 npm run update
+npm run dev
 ```
 
-Start the server with `npm run dev`, and navigate to [localhost:3000](http://localhost:3000).
+and navigate to [localhost:3000](http://localhost:3000).
 
-## Using a local copy of Svelte
+## Running using the local copy of Svelte
 
 By default, the REPL will fetch the most recent version of Svelte from https://unpkg.com/svelte. When running the site locally, you can also use your local copy of Svelte.
 
-To produce the proper browser-compatible UMD build of the compiler, you will need to run `npm run build` (or `npm run dev`) in the root of this repository with the `PUBLISH` environment variable set to any non-empty string.
+To produce the proper browser-compatible UMD build of the compiler, you will need to run `npm run build` (or `npm run dev`) in the root of this repository with the `PUBLISH` environment variable set to any non-empty string:
+
+```bash
+git clone https://github.com/sveltejs/svelte.git
+cd svelte
+npm ci
+PUBLISH=1 npm run build
+cd site
+npm ci
+npm run update
+npm run dev
+```
 
 Then visit the REPL at [localhost:3000/repl?version=local](http://localhost:3000/repl?version=local). Please note that the local REPL only works with `npm run dev` and not when building the site for production usage.
 
@@ -35,6 +44,7 @@ In order for the REPL's GitHub integration to work properly when running locally
    GITHUB_CLIENT_SECRET=[your app's Client Secret]
    BASEURL=http://localhost:3000
    ```
+
 ## Building the site
 
 To build the website, run `npm run sapper`. The output can be found in `__sapper__/build`.