docs: Update EN Locales

Created by: Felixnoo

Signed-off-by: Felixnoo felixliu@kubesphere.io

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Update EN UI strings.

Which issue(s) this PR fixes:

This is part of the efforts to fix ##2760 (closed).

Special notes for reviewers:

None.

Does this PR introduced a user-facing change?

None

/cc @Patrick-LuoYu /cc @harrisonliu5 Please take a look, thanks.