doc: fix myUrl is not defined in url
Fixes a typo in the variable name in the URL code example in doc.
Renames myUrl to myURL for consistency and readability.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Fixes a typo in the variable name in the URL code example in doc.
Renames myUrl to myURL for consistency and readability.