Fix the suggested hostname for dev setups

Author: pimterry

README.md

@@ -23,9 +23,9 @@ To get started:
 * `npm install`
 * For pure UI development
     * Run `npm start` to start the UI along with a backing [httptoolkit server](https://github.com/httptoolkit/httptoolkit-server).
-    * Open [`local.httptoolkit.tech:8080`](http://local.httptoolkit.tech:8080) to view the UI
+    * Open [`localhost:8080`](http://localhost:8080) to view the UI
 * To develop the UI & server together
     * Start [a server](https://github.com/httptoolkit/httptoolkit-server) locally
     * Run `npm run start:web` to start the UI without running a separate HTTP Toolkit server
-    * Open [`local.httptoolkit.tech:8080`](http://local.httptoolkit.tech:8080) to view the UI
+    * Open [`localhost:8080`](http://localhost:8080) to view the UI
 * `npm test` - run the tests (not many yet, but more are very welcome!)

automation/webpack.dev.ts

@@ -12,7 +12,7 @@ export default merge(common, {
     devtool: 'eval-cheap-module-source-map' as any,
 
     devServer: {
-        host: '127.0.0.1',
+        host: 'localhost',
         historyApiFallback: true,
         client: {
             overlay: {