docs(guide/e2e-testing): remove repeated word 'manually'
docs(guide/e2e-testing): remove repeated word 'manually'

Fixed repetition in Caveats paragraph

"manually" was repeated. Grammatical correctness is the prime directive, resistance is futile.

Closes #7073

ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js