revert changes made to refdocs

Author: dlarocque

docs-devsite/_toc.yaml

@@ -472,6 +472,8 @@ toc:
         path: /docs/reference/js/vertexai-preview.date_2.md
       - title: EnhancedGenerateContentResponse
         path: /docs/reference/js/vertexai-preview.enhancedgeneratecontentresponse.md
+      - title: ErrorDetails
+        path: /docs/reference/js/vertexai-preview.errordetails.md
       - title: FileData
         path: /docs/reference/js/vertexai-preview.filedata.md
       - title: FileDataPart
@@ -515,6 +517,8 @@ toc:
         path: /docs/reference/js/vertexai-preview.groundingattribution.md
       - title: GroundingMetadata
         path: /docs/reference/js/vertexai-preview.groundingmetadata.md
+      - title: HTTPErrorDetails
+        path: /docs/reference/js/vertexai-preview.httperrordetails.md
       - title: InlineDataPart
         path: /docs/reference/js/vertexai-preview.inlinedatapart.md
       - title: ModelParams
@@ -542,6 +546,8 @@ toc:
       - title: VertexAI
         path: /docs/reference/js/vertexai-preview.vertexai.md
       - title: VertexAIOptions
+      - title: VertexAIError
+        path: /docs/reference/js/vertexai-preview.vertexaierror.md
         path: /docs/reference/js/vertexai-preview.vertexaioptions.md
       - title: VideoMetadata
         path: /docs/reference/js/vertexai-preview.videometadata.md