Headstage64 Page: Memory monitor is disabled, but the data node exists

[bparks13]

On this page: https://open-ephys.github.io/bonsai-onix1-docs/articles/hardware/hs64/workflow.html

The workflow contains a MemoryMonitorData node, which I would expect to produce data if I were to copy this workflow and run it.

However, the MemoryMonitor device is disabled:

This is potentially confusing to an end user.

We should either:

1. Remove the MemoryMonitorData node, or
2. Enable the MemoryMonitor device in the ConfigureHeadstage64 node