You misunderstood me. At the bottom of the file, all label names are listed with the URL they are conncted to. This is also label, as it's in backticks and ends with an underscore. 

At the bottom, you'll find:

    .. _JMSSecurityExtraBundle: ...

And you should change it to:

    .. _SensioFrameworkExtraBundle: ...

(where... is the correct URL)