Update installation.md (#5137)

Signed-off-by: Masato Naka <[email protected]>

Author: nakamasato

website/content/en/docs/building-operators/ansible/installation.md

@@ -13,7 +13,7 @@ Follow the steps in the [installation guide][install-guide] to learn how to inst
 - [docker][docker_tool] version 17.03+.
 - [python][python] version 3.8.6+
 - [ansible][ansible] version v2.9.0+
-- [ansible-runner][ansible-runner] version v1.1.0+
+- [ansible-runner][ansible-runner] version >=1.1.0,<2.0
 - [ansible-runner-http][ansible-runner-http-plugin] version v1.0.0+
 - [openshift][openshift-module] version v0.11.2+
 - [kubectl][kubectl_tool] and access to a Kubernetes cluster of a [compatible version][k8s-version-compat].