Network Renderer: redirecting Documentation wiki link

Bump version to 1.8.1

As mentioned in T54062:
Since the previous link was pointing out to the old Wiki Manual,
created the appriate page on the Add-ons wiki.

No other functional changes
7 jobs for blender-v2.79a-release in 20 seconds (queued for 1 minute and 57 seconds)
Status Name Job ID Coverage
  Build
failed build #23415

00:00:20

 
  Test
skipped code_quality #23417
allowed to fail
skipped container_scanning #23421
allowed to fail
skipped dependency_scanning #23420
allowed to fail
skipped license_management #23418
allowed to fail
skipped sast #23419
allowed to fail
skipped test #23416
 
Name Stage Failure
failed
build Build
Skipping Git submodules setup
$ # Auto DevOps variables and functions # collapsed multi-line command
$ setup_docker
$ build
Logging to GitLab Container Registry with CI credentials...
WARNING! Using --password via the CLI is insecure. Use --password-stdin.
Warning: failed to get default registry endpoint from daemon (Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?). Using system default: https://index.docker.io/v1/
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
ERROR: Job failed: exit code 1