docs(i): Fix incorrect flag and env variable

[fredcarle]

Relevant issue(s)

Resolves #3033

Description

The flag and environment variable was kept unchanged from an initial commit in the non-interactive keyring PR. This fixes the mistake.

[shahzadlone]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.38%. Comparing base (5b58c19) to head (87c0d19).
Report is 1 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #3034   +/-   ##
========================================
  Coverage    79.38%   79.38%           
========================================
  Files          333      333           
  Lines        25837    25837           
========================================
  Hits         20509    20509           
- Misses        3864     3866    +2     
+ Partials      1464     1462    -2     

Flag	Coverage Δ
all-tests	79.38% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
cli/keyring_export.go	81.82% <100.00%> (ø)
cli/keyring_generate.go	78.72% <100.00%> (ø)
cli/keyring_import.go	80.95% <100.00%> (ø)

... and 13 files with indirect coverage changes

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