fix: typo in error message

[vinckr]

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 green light (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 #2332 (0c16e72) into master (52c9824) will increase coverage by 0.04%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2332      +/-   ##
==========================================
+ Coverage   76.53%   76.57%   +0.04%     
==========================================
  Files         318      318              
  Lines       17156    17156              
==========================================
+ Hits        13130    13137       +7     
+ Misses       3094     3087       -7     
  Partials      932      932              

Impacted Files	Coverage Δ
continuity/manager_cookie.go	49.23% <ø> (ø)
cmd/courier/watch.go	72.41% <0.00%> (+12.06%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 52c9824...0c16e72. Read the comment docs.