Update commands in offline updates

[pipex]

The balena fleet commands in this guide no longer work with the latest version of the CLI which returns a capitalized table instead of all uppercase items. Not sure when this change took place on the CLI side.

Change-type: patch

[volks73]

@pipex Hello! I think the awk command also needs to be changed from $2 to $3. The $2 value returns the : not the values.

As an example,

❯ balena fleet ${fleet_name} | grep Slug | awk '{print $2}'
:

versus

❯ balena fleet ${fleet_name} | grep Slug | awk '{print $3}'
<org>/<fleet>

The <org> and <fleet> have been omitted.

[pipex]

@volks73 nice catch. I've added the changes

[vipulgupta2048]

Thanks @pipex @volks73 for bringing this log. Approved 🚀