(maint) fix RST formatting of has_interface_with code examples
(maint) fix RST formatting of has_interface_with code examples

fuel-infra/puppetlabs-stdlib,HelenCampbell/puppetlabs-stdlib,jbondpdx/puppetlabs-stdlib,DavidS/puppetlabs-stdlib,yadavnikhil/puppetlabs-stdlib,puppetlabs/puppetlabs-stdlib