docs: edit budget_with_farming.md demo text

[barriebyron]

changes for grammar and consistent audience "you"

see the Technical content style guidance for Farming

most of the changes here tightened up language, provide consistency, changed audience to "you"

good job! I did not run the demo, so I verify only the language

Description

closes: #XXXX

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[barriebyron]

suggestions for clarity around code fences and output of commands

good work for the demo!

[jaybxyz]

As always, we appreciate you for taking the time to review the docs. They are really valuable feedbacks and suggestions. I left some comments and replied to your questions.

[barriebyron]

thank you @kogisin make any changes required and commit at will, great improvements!