copy update: update lxd/manage

[Ninfa-Jeon]

Done

• Update lxd/manage to change from UK to US English and fix grammatical errors
• Refer copydoc: https://docs.google.com/document/d/1doGyKYSTOsX8dHvQ6W9W2U_pHQY6yfiq1bqSAJyredQ/edit?tab=t.0

QA

• Check out this feature branch
• Run the site using the command ./run serve
• View the site locally in your web browser at: http://0.0.0.0:8002/ or check against demo
• View that all requested changes have been made

Issue / Card

Fixes WD-33533

[webteam-app]

Demo

Jenkins

demos.haus

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.88%. Comparing base (e5225c8) to head (7a4991b).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2255   +/-   ##
=======================================
  Coverage   78.88%   78.88%           
=======================================
  Files          16       16           
  Lines        1804     1804           
=======================================
  Hits         1423     1423           
  Misses        381      381           

Flag	Coverage Δ
python	78.88% <ø> (ø)

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