Clarify ports in JS dev server instructions (#6563)
Clarify ports in JS dev server instructions (#6563)

* Clarify ports in JS dev server instructions

Signed-off-by: Prithvi Kannan <b6589def647aa7ef64f2412ba22eb67472d11fbb@databricks.com>

* update text

Signed-off-by: Prithvi Kannan <b6589def647aa7ef64f2412ba22eb67472d11fbb@databricks.com>

Signed-off-by: Prithvi Kannan <b6589def647aa7ef64f2412ba22eb67472d11fbb@databricks.com>
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