Documentation: make some of the policy examples valid
Documentation: make some of the policy examples valid

Add the brackets so that each example can be taken seperately
and loaded. Makes it more copy / paste friendly.

Also use the correct syntax for ports so we don't end up with empty
`toPorts`, thanks André for pointing this out.

Signed-off-by: Alexander Alemayhu <e46fc836cca3acec03944314d1457c2ae6c68ef3@alemayhu.com>

tgraf/cilium,tklauser/cilium,scanf/cilium,scanf/cilium,tklauser/cilium,michi-covalent/cilium,tgraf/cilium,tklauser/cilium,tklauser/cilium,michi-covalent/cilium,tklauser/cilium,scanf/cilium,eloycoto/cilium,eloycoto/cilium,eloycoto/cilium,cilium-team/cilium,scanf/cilium,eloycoto/cilium,cilium/cilium,cilium/cilium,eloycoto/cilium,tgraf/cilium,tgraf/cilium,scanf/cilium,eloycoto/cilium,michi-covalent/cilium,michi-covalent/cilium,tgraf/cilium,cilium/cilium,scanf/cilium,cilium/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium,michi-covalent/cilium,scanf/cilium,eloycoto/cilium