mention 1.11 benchmark instead of 1.6

Signed-off-by: Thomas Sjögren <konstruktoid@users.noreply.github.com>

Author: konstruktoid

CONTRIBUTING.md

@@ -48,4 +48,4 @@ tests/
 
 To modify the Docker Bench for Security you should first clone the repository, make your changes, check your code with `shellcheck`, `checkbashisms` or similar tools, and then sign off on your commits. After that feel free to send us a pull-request with the changes.
 
-While this tool is inspired in the CIS Docker 1.6 Benchmark, feel free to add new tests. We will try to turn dockerbench.com into a list of good community benchmarks for both security and performance, and we would love community contributions.
+While this tool is inspired by the [CIS Docker 1.11.0 benchmark](https://benchmarks.cisecurity.org/downloads/show-single/index.cfm?file=docker16.110), feel free to add new tests. We will try to turn dockerbench.com into a list of good community benchmarks for both security and performance, and we would love community contributions.

docker-bench-security.sh

@@ -2,11 +2,11 @@
 # ------------------------------------------------------------------------------
 # Docker Bench for Security v1.0.0
 #
-# Docker, Inc. (c) 2015
+# Docker, Inc. (c) 2015-
 #
 # Checks for dozens of common best-practices around deploying Docker containers in production.
-# Inspired by the CIS Docker 1.6 Benchmark:
-# https://benchmarks.cisecurity.org/tools2/docker/CIS_Docker_1.6_Benchmark_v1.0.0.pdf
+# Inspired by the CIS Docker 1.11 Benchmark:
+# https://benchmarks.cisecurity.org/downloads/show-single/index.cfm?file=docker16.110
 #
 # ------------------------------------------------------------------------------