correct fedora package name in documentation

in the documentation on how to use the dnsname plugin, there was a typo in the fedora package name.

Fixes: #18

Signed-off-by: baude <bbaude@redhat.com>

README_PODMAN.md

@@ -6,7 +6,7 @@ CNI configuration.  The containers will only be able to resolve each other if th
 
 **Note**: This plugin does not work with rootless containers.
 
-This tutorial assumes you already have Podman, containernetwork-plugins, and a golang development environment installed.
+This tutorial assumes you already have Podman, containernetworking-plugins, and a golang development environment installed.
 
 ## Install dnsmasq