test(MeshTCPRoute): small name fix in e2e test case

[bartsmykla]

Very small fix in the name of service in e2e test case for MeshTCPRoute

Checklist prior to review

• Link to relevant issue as well as docs and UI issues
  • MeshTCPRoute implementation #6787
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS
  • it won't
• Tests (Unit test, E2E tests, manual test on universal and k8s)
  • it's a fix in an e2e test case actually
• Do you need to update UPGRADE.md?
  • there is no need
• Does it need to be backported according to the backporting policy?
  • there is no need
• Do you need to explicitly set a > Changelog: entry here or add a ci/ label to run fewer/more tests?
  • there is no need