Update reference documentation

Author: dlarocque

docs-devsite/vertexai.md

@@ -545,7 +545,7 @@ export declare const enum VertexAIErrorCode
 |  INVALID\_CONTENT | <code>&quot;invalid-content&quot;</code> | An error associated with a Content object. |
 |  INVALID\_SCHEMA | <code>&quot;invalid-schema&quot;</code> | An error due to invalid Schema input. |
 |  NO\_API\_KEY | <code>&quot;no-api-key&quot;</code> | An error occurred due to a missing Firebase API key. |
-|  NO\_APP\_ID | <code>&quot;no-app-id&quot;</code> | An error occured due to a missing app ID. |
+|  NO\_APP\_ID | <code>&quot;no-app-id&quot;</code> | An error occured due to a missing Firebase app ID. |
 |  NO\_MODEL | <code>&quot;no-model&quot;</code> | An error occurred due to a model name not being specified during initialization. |
 |  NO\_PROJECT\_ID | <code>&quot;no-project-id&quot;</code> | An error occurred due to a missing project ID. |
 |  PARSE\_FAILED | <code>&quot;parse-failed&quot;</code> | An error occurred while parsing. |