docs: fix typo in smi.md

[dmetz-figma]

Before: "Name of service that sends traffic only to the stable po ds"
After: "Name of service that sends traffic only to the stable pods"

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional with a list of types and scopes found here, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed my commits with DCO
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (5b46e7a) 81.85% compared to head (04b2086) 81.85%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3160   +/-   ##
=======================================
  Coverage   81.85%   81.85%           
=======================================
  Files         134      134           
  Lines       20556    20556           
=======================================
  Hits        16826    16826           
  Misses       2866     2866           
  Partials      864      864           

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[github-actions]

Go Published Test Results

2 083 tests   2 083 ✔️  2m 47s ⏱️
   118 suites         0 💤
       1 files           0 ❌

Results for commit 04b2086.

[github-actions]

E2E Tests Published Test Results

    4 files      4 suites   3h 26m 46s ⏱️
103 tests   91 ✔️   6 💤   6 ❌
426 runs  389 ✔️ 24 💤 13 ❌

For more details on these failures, see this check.

Results for commit 04b2086.