Fix example output

[kate-osborn]

Proposed changes

Problem: The example output in the http-header-filter and https-termination examples are outdated.

Solution: Updated the example output to match the actual output.

Testing: Verified actual output matches expected.

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork