broker.conf documentation : wrong tokenSecretKey base64 inline description

On the website the documentation to pass a token in base64 mention to use
`tokenSecretKey=data:;base64,******`

However I could not have it working using (without the semicolon)
`tokenSecretKey=data:base64,******`

I am using the broker version 2.6.3

Context (not sure important) :
- On openjdk 11.0.10
- I also use two authentication mechanisms
`authenticationProviders=org.apache.pulsar.broker.authentication.AuthenticationProviderTls,org.apache.pulsar.broker.authentication.AuthenticationProviderToken`

This has been discussed here https://github.com/apache/pulsar/issues/6761 but led to the opposite observation.

Start with the website's broker.conf documentation for tokenSecretKey and compare its inline base64 example with the behavior reported for broker version 2.6.3. Read issue #6761 for the conflicting observation and verify which syntax is supported; done means the documentation shows the correct form and explains any relevant context.

Written by the indexing model from the issue text.