Fix TestAccVertexAIFeaturestore_vertexAiFeaturestoreExample

[c2thorn]

Fixes hashicorp/terraform-provider-google#9788

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[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform Beta: Diff ( 1 file changed, 1 insertion(+), 1 deletion(-))

[ScottSuarez]

lgtm ! :D