Update containerized Ansible tag and make documentation about "make roles" clearer

`devture/ansible:2.13.6-r0` contains the `make` utility.
(8597fd8272)

Fixes https://github.com/spantaleev/matrix-docker-ansible-deploy/issues/2248

docs/ansible.md

@@ -45,10 +45,7 @@ Alternatively, you can run Ansible inside a Docker container (powered by the [de
 
 This ensures that you're using a very recent Ansible version, which is less likely to be incompatible with the playbook.
 
-There are 2 ways to go about it:
-
-- [Running Ansible in a container on the Matrix server itself](#running-ansible-in-a-container-on-the-matrix-server-itself)
-- [Running Ansible in a container on another computer (not the Matrix server)](#running-ansible-in-a-container-on-another-computer-not-the-matrix-server)
+You can either [run Ansible in a container on the Matrix server itself](#running-ansible-in-a-container-on-the-matrix-server-itself) or [run Ansible in a container on another computer (not the Matrix server)](#running-ansible-in-a-container-on-another-computer-not-the-matrix-server).
 
 
 ### Running Ansible in a container on the Matrix server itself
@@ -73,7 +70,7 @@ docker run -it --rm \
 -w /work \
 -v `pwd`:/work \
 --entrypoint=/bin/sh \
-docker.io/devture/ansible:2.13.0-r0
+docker.io/devture/ansible:2.13.6-r0
 ```
 
 Once you execute the above command, you'll be dropped into a `/work` directory inside a Docker container.
@@ -92,7 +89,7 @@ docker run -it --rm \
 -v `pwd`:/work \
 -v $HOME/.ssh/id_rsa:/root/.ssh/id_rsa:ro \
 --entrypoint=/bin/sh \
-docker.io/devture/ansible:2.13.0-r0
+docker.io/devture/ansible:2.13.6-r0
 ```
 
 The above command tries to mount an SSH key (`$HOME/.ssh/id_rsa`) into the container (at `/root/.ssh/id_rsa`).