Fix typo about the kind of request

[gmile]

What this PR does / why we need it:

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

[gmile]

Travis failure looks like a flack test?

• Failure [45.314 seconds]
[nginx-ingress] Dynamic Configuration
/home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/framework/framework.go:142
  should not fail requests when upstream-hash-by annotation is set [It]
  /home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/lua/dynamic_configuration.go:222
  Expected
      <string>: http-svc-5f5b96d78f-w7fnt
  not to equal
      <string>: http-svc-5f5b96d78f-w7fnt
  /home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/lua/dynamic_configuration.go:263
  Full Stack Trace
  	/home/travis/gopath/src/k8s.io/ingress-nginx/vendor/github.com/onsi/gomega/internal/assertion/assertion.go:69 +0x1ed
  k8s.io/ingress-nginx/vendor/github.com/onsi/gomega/internal/assertion.(*Assertion).NotTo(0xc420295540, 0x1246fe0, 0xc42010cea0, 0x0, 0x0, 0x0, 0xc420295540)
  	/home/travis/gopath/src/k8s.io/ingress-nginx/vendor/github.com/onsi/gomega/internal/assertion/assertion.go:43 +0xae
  k8s.io/ingress-nginx/test/e2e/lua.glob..func1.4()
  	/home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/lua/dynamic_configuration.go:263 +0x1a7f
  k8s.io/ingress-nginx/vendor/github.com/onsi/ginkgo/internal/leafnodes.(*runner).runSync(0xc420098720, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ...)
  	/home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/e2e.go:53 +0x172
  k8s.io/ingress-nginx/test/e2e.TestE2E(0xc4201c41e0)
  	/home/travis/gopath/src/k8s.io/ingress-nginx/test/e2e/e2e_test.go:36 +0x2b
  testing.tRunner(0xc4201c41e0, 0x11cbe80)
  	/home/travis/.gimme/versions/go1.10.1.linux.amd64/src/testing/testing.go:777 +0xd0
  created by testing.(*T).Run
  	/home/travis/.gimme/versions/go1.10.1.linux.amd64/src/testing/testing.go:824 +0x2e0```

[aledbf]

/approve
/lgtm

[aledbf]

@gmile thanks!

[k8s-ci-robot]

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[ElvinEfendi]

fwiw: yes, that's a flaky test - I'm expecting to tackle it sometime this week or next week unless someone else does. We have few other flaky tests as well.