Documentation/admin: nitpicks
Documentation/admin: nitpicks

o s/run a small setup/experiment/
o fix broken link. Policy test example link should now render.
o remove duplicated line.
o s/apiserver/API server

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

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