fix minor typos (#531)

Author: alexvuong

packages/pwa/README.md

@@ -88,7 +88,7 @@ By default, the Retail App is configured to a single locale, single site project
 The `sites.js` file contains definition of the sites that you have configured in Business Manager. The following example shows configuration for `RefArch` and `RefArchGlobal` sites:
 
 ```js
-\\ /config/sites.js
+// /config/sites.js
 
 module.exports = [
     {
@@ -138,15 +138,17 @@ module.exports = [
 
 Optionally, You can then map the site IDs with aliases in `/config/default.js` file and also set default site. If no alias is defined for the site, then IDs are used in URLs. 
 
-```
-\\ /config/default.js
-   
-   defaultSite: 'RefArchGlobal',
-   siteAliases: {
-       RefArch: 'us',
-       RefArchGlobal: 'global',
-       NTOManaged: 'nto'
-   },
+```js
+// /config/default.js
+module.exports = {
+    defaultSite: 'RefArchGlobal',
+    siteAliases: {
+        RefArch: 'us',
+        RefArchGlobal: 'global',
+        NTOManaged: 'nto'
+    },
+    // the rest of the config
+}
 ```
 
 If you set `url.showDefault` to `true` in `/config/default.js` file, then default locale and site are set in the URL of your Retail app. In addition to site alias, you can also configure aliases for your locale in `sites.js` file. If you configured alias, URL will reflect that instead of your locale ID. 
@@ -164,4 +166,4 @@ The full documentation for PWA Kit is hosted on the [Salesforce Developers](http
 -   [Configuration Options](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/configuration-options.html)
 -   [Pushing and Deploying Bundles](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/pushing-and-deploying-bundles.html)
 -   [The Retail React App](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/retail-react-app.html)
--   [Proxying Requests](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/proxying-requests.html)
+-   [Proxying Requests](https://developer.salesforce.com/docs/commerce/pwa-kit-managed-runtime/guide/proxying-requests.html)

packages/pwa/app/utils/url.js

@@ -240,7 +240,7 @@ export const removeQueryParamsFromPath = (path, keys) => {
  * url {
  *    locale: "query_param",
  *    site: "path",
- *    showDefault: true
+ *    showDefaults: true
  * }
  *
  *