Fix BUG in README

Signed-off-by: Johannes Petzold <jpetzold@pivotallabs.com>
automatic promotion by GoCD workflow LoggregatorIntegrationTest/119 > IntegrationTests/1 > IntegrationTests

tests passed against https://github.com/cloudfoundry/cf-release/commit/34091d0695e7e60b777783150032e0ce1be9d568