chore: fix introspect command CLI example

[tomekpapiernik]

Updated the CLI help text to show a correct example of ory introspect token.

Related issue(s)

Checklist

• I have read the contributing guidelines.
• I have referenced an issue containing the design document if my change
  introduces a new feature.
• I am following the
  contributing code guidelines.
• I have read the security policy.
• I confirm that this pull request does not address a security
  vulnerability. If this pull request addresses a security vulnerability, I
  confirm that I got the approval (please contact
  security@ory.sh) from the maintainers to push
  the changes.
• I have added tests that prove my fix is effective or that my feature
  works.
• I have added or changed the documentation.

Further Comments

[codecov]

Codecov Report

Merging #3353 (4c57516) into master (90152fa) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #3353      +/-   ##
==========================================
- Coverage   76.84%   76.82%   -0.02%     
==========================================
  Files         123      123              
  Lines        8922     8924       +2     
==========================================
  Hits         6856     6856              
- Misses       1638     1640       +2     
  Partials      428      428              

Impacted Files	Coverage Δ
cmd/cmd_introspect_token.go	78.94% <100.00%> (ø)
health/doc.go	0.00% <0.00%> (ø)

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