docs: Cluster-wide debugging tool documentation
docs: Cluster-wide debugging tool documentation

- Update docs to add a section about the cluster-wide debugging tool.
- Fix some nitpicks in existing documentation; Simplify the content.

Signed-off-by: Ashwin Paranjpe ashwin@covalent.io

Summary of changes:

Fixes: 2349

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