Update README.md

README.md

@@ -42,7 +42,7 @@ When you have these, add the below to your `web/sites/default/settings.php` file
 
 ```php
 $schemes = [
-  'azure_blob_storage' => [
+  'az_blob' => [
     'driver' => 'azure_blob_storage',
     'config' => [
       'name' => '<your account name>',
@@ -60,7 +60,7 @@ $settings['flysystem'] = $schemes;
 ```
 
 To support serving JS and CSS settings, add `serve_js => TRUE` and / or 
-`serve_css => TRUE` depending on your requirements to the `azure` key in the 
+`serve_css => TRUE` depending on your requirements to the `az_blob` key in the 
 `$schemes` array.
 
 ## Maintainers