Missed a space causing invalid YAML

molecule/centos/molecule.yml

@@ -53,7 +53,7 @@ provisioner:
           address: 127.0.0.1
     host_vars:
       centos-6:
-        inspec_download_url:https://packages.chef.io/files/stable/inspec/2.2.16/el/6/inspec-2.2.16-1.el6.x86_64.rpm
+        inspec_download_url: https://packages.chef.io/files/stable/inspec/2.2.16/el/6/inspec-2.2.16-1.el6.x86_64.rpm
         inspec_download_sha256sum: 616af0700b3c80f545d143dfe24c987039a8d715cbb615aac5ad94b0e0b34323
       centos-7:
         inspec_download_url: https://packages.chef.io/files/stable/inspec/2.2.16/el/7/inspec-2.2.16-1.el7.x86_64.rpm