Update README.md (#608)

Author: mtarking

README.md

@@ -327,7 +327,11 @@ This collection is intended for use with the following release versions:
 <!--start requires_ansible-->
 ## Ansible Version Compatibility
 
-This collection has been tested against following Ansible versions: **>=2.14.15**.
+This collection has been tested against following Ansible Core versions: 
+* `2.14.x`
+* `2.15.x`
+* `2.16.x`
+* `2.17.x`
 
 Plugins, roles and modules within a collection may be tested with only specific Ansible versions.
 A collection may contain metadata that identifies these versions.