feat(cli): Add example to argocd relogin command

[chiranjeevir-git]

Hi team,
With this PR I would like to address the missing examples for the command "argocd relogin" for issue #15690.

argo-cd/cmd/argocd/commands/relogin.go

Line 26 in a934772

var command = &cobra.Command{

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this does not need to be in the release notes.
• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE #]" or "Fixes [ISSUE #]" in the description to automatically close the associated issue.
• I've updated both the CLI and UI to expose my feature, or I plan to submit a second PR with them.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• Optional. My organization is added to USERS.md.
• I have signed off all my commits as required by DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.
• I have added a brief description of why this PR is necessary and/or what this PR solves.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (c07bf26) 49.87% compared to head (0c7a145) 49.87%.
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #15839      +/-   ##
==========================================
- Coverage   49.87%   49.87%   -0.01%     
==========================================
  Files         267      267              
  Lines       46166    46186      +20     
==========================================
+ Hits        23027    23034       +7     
- Misses      20880    20891      +11     
- Partials     2259     2261       +2     

Files	Coverage Δ
cmd/argocd/commands/relogin.go	17.91% <100.00%> (-1.21%)	⬇️

... and 3 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.