Remove `host` from sample workspaces file

[johnsmyth]

Describe the bug The sample workspaces file that we create (workspaces.ppc.sample) contains a host argument which is not supported. Also, the section label Dashboard / API Server Options should probably just be Dashboard Server Options

This is the relevant portion:

#   # Dashboard / API Server Options
#   host                = "local"
#   listen              = "network"
#   port                = 9033
#   watch               = true
...

Powerpipe version (powerpipe -v) Powerpipe v0.3.0

Expected behavior

That section should probably be:

#   # Dashboard Server Options
#   listen              = "network"
#   port                = 9033
#   watch               = true
...

Additional context

https://turbot-community.slack.com/archives/C06MZTFN90E/p1715957952712429