Update add-a-get-note-api.md (#441)
Update add-a-get-note-api.md (#441)

Prior to this we're operating in "mocks"  it should be specified to invoke from the root of the project directory. In the next chapter "add-a-list-all-the-notes-api" it is specified in this format.
AnomalyInnovations/serverless-stack-com,AnomalyInnovations/serverless-stack-com