⚙️ chore(README): update Azure instructions and examples

.vscode/cspell.json

@@ -1,6 +1,7 @@
 {
     "words": [
         "businessworker",
+        "davinci",
         "gatewayworker",
         "laravel",
         "openai",

README.md

@@ -46,6 +46,28 @@ $result = di(OpenAI\Client::class)->completions()->create([
 echo $result['choices'][0]['text']; // an open-source, widely-used, server-side scripting language.
 ```
 
+## Azure
+
+In order to use the Azure OpenAI Service, it is necessary to construct the client manually using the factory.
+
+```php
+$client = OpenAI::factory()
+    ->withBaseUri('{your-resource-name}.openai.azure.com/openai/deployments/{deployment-id}')
+    ->withHttpHeader('api-key', '{your-api-key}')
+    ->withQueryParam('api-version', '{version}')
+    ->make();
+```
+
+To use Azure, you must deploy a model, identified by the {deployment-id}, which is already incorporated into the API calls. As a result, you do not have to provide the model during the calls since it is included in the BaseUri.
+
+Therefore, a basic sample completion call would be:
+
+```php
+$result = $client->completions()->create([
+    'prompt' => 'PHP is'
+]);
+```
+
 ## Usage
 
 For usage examples, take a look at the [openai-php/client](https://github.com/openai-php/client) repository.