Update TokenBuilder example

Usage-Authorization.md

@@ -22,10 +22,10 @@ The connector currently supports four authorization methods.
 ##### Create new Token
 ```java
  // Create new token using the builder (supports all current parameters).
- Token token = new TokenBuilder()
-                   .withId("token-id")
-                   .withDisplayName("token name")
-                   .build();
+ Token token = Token.builder()
+                    .withId("token-id")
+                    .withDisplayName("token name")
+                    .build();
  // Write token to Vault (orphan creatin and role binding possible).
  AuthResponse createResponse = connector.createToken(token);
 ```