add warning note that NLS eReader Zoomax is not supported (#16628)
Related to #15863
Summary of the issue:
The NLS eReader Zoomax is not supported by NVDA currently, despite a message in the user guide suggesting the contrary.
See #15863 for discussion on adding support for the eReader
Description of user facing changes
add warning note that NLS eReader Zoomax is not supported
