chore(docs): Add command config example to Azure auth provider docs.

Author: spbsoluble

docs/auth_providers.md

@@ -2,6 +2,14 @@
 What is an `auth provider` in the conext of `kfutil`? It's a way to source credentials needed to connect to a Keyfactor
 product or service from a secure location rather than a file on disk or environment variables. 
 
+* [Available Auth Providers](#available-auth-providers)
+* [Azure Key Vault](#azure-key-vault)
+    + [Configuration](#configuration)
+    + [Azure Key Vault Secret Format](#azure-key-vault-secret-format)
+        - [Usage](#usage)
+            * [Default](#default)
+            * [Explicit](#explicit)
+
 ## Available Auth Providers
 - [Azure Key Vault](#azure-key-vault)
 
@@ -28,6 +36,23 @@ file and will be used by `kfutil` to source credentials for the Keyfactor produc
   }
 }
 ```
+
+### Azure Key Vault Secret Format
+The format of the Azure Key Vault secret should be the same as if you were to run `kfutil login` and go through the 
+interactive auth flow. Here's an example of what that would look like:
+```json
+{
+  "servers": {
+    "default": {
+      "host": "my.kfcommand.domain",
+      "username": "my_kfcommand_username",
+      "password": "my_kfcommand_password",
+      "domain": "my_kfcommand_domain",
+      "api_path": "KeyfactorAPI"
+    }
+  }
+}
+```
 #### Usage
 
 ##### Default
@@ -47,3 +72,6 @@ kfutil \
   --config /path/to/config/file.json \
   stores list
 ```
+The above explicitly tells the utility to only attempt to use the Azure Key Vault auth provider. This mode will not fail
+to user interactive or environmental variable auth if provided. The example also shows how to specify a custom path to
+the auth provider configuration file and what profile to look for in the configuration file stored in Azure.