doc() : add informations about 2.6.9 version

2 jobs for 2.6.9 in 49 seconds (queued for 33 minutes)
latest
Status Name Job ID Coverage
  Build
failed build #28575

00:00:49

 
  Tests
skipped tests #28576
 
Name Stage Failure
failed
build Build
Successfully extracted cache
$ docker info
Client:
Debug Mode: false

Server:
ERROR: error during connect: Get http://docker:2375/v1.40/info: dial tcp: lookup docker on 217.70.186.193:53: no such host
errors pretty printing info
ERROR: Job failed: exit code 1