docs: update security email

[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 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 #3465 (76e09f8) into master (ffe4943) will decrease coverage by 0.03%.
The diff coverage is n/a.

❗ Current head 76e09f8 differs from pull request most recent head 24b0edb. Consider uploading reports for the commit 24b0edb to get more accurate results

@@            Coverage Diff             @@
##           master    #3465      +/-   ##
==========================================
- Coverage   76.86%   76.83%   -0.03%     
==========================================
  Files         123      123              
  Lines        9108     9106       -2     
==========================================
- Hits         7001     6997       -4     
- Misses       1663     1664       +1     
- Partials      444      445       +1     

see 2 files with indirect coverage changes

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