Add documentation for aquery_differ tool.
Add documentation for aquery_differ tool.

RELNOTES: None
PiperOrigin-RevId: 233918704

twitter-forks/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,cushon/bazel,aehlig/bazel,ulfjack/bazel,meteorcloudy/bazel,aehlig/bazel,dslomov/bazel,cushon/bazel,katre/bazel,perezd/bazel,meteorcloudy/bazel,werkt/bazel,akira-baruah/bazel,safarmer/bazel,katre/bazel,dslomov/bazel,meteorcloudy/bazel,davidzchen/bazel,safarmer/bazel,perezd/bazel,ButterflyNetwork/bazel,dslomov/bazel-windows,twitter-forks/bazel,safarmer/bazel,aehlig/bazel,dslomov/bazel,perezd/bazel,akira-baruah/bazel,twitter-forks/bazel,ulfjack/bazel,davidzchen/bazel,dslomov/bazel-windows,werkt/bazel,safarmer/bazel,aehlig/bazel,katre/bazel,aehlig/bazel,cushon/bazel,akira-baruah/bazel,davidzchen/bazel,davidzchen/bazel,katre/bazel,dslomov/bazel-windows,ulfjack/bazel,twitter-forks/bazel,ButterflyNetwork/bazel,perezd/bazel,katre/bazel,dslomov/bazel,twitter-forks/bazel,akira-baruah/bazel,aehlig/bazel,dslomov/bazel,perezd/bazel,dslomov/bazel,dslomov/bazel-windows,safarmer/bazel,bazelbuild/bazel,meteorcloudy/bazel,ulfjack/bazel,bazelbuild/bazel,akira-baruah/bazel,meteorcloudy/bazel,katre/bazel,twitter-forks/bazel,werkt/bazel,cushon/bazel,davidzchen/bazel,perezd/bazel,dslomov/bazel,ButterflyNetwork/bazel,davidzchen/bazel,bazelbuild/bazel,safarmer/bazel,werkt/bazel,dslomov/bazel-windows,twitter-forks/bazel,ulfjack/bazel,werkt/bazel,perezd/bazel,ulfjack/bazel,dslomov/bazel-windows,meteorcloudy/bazel,ButterflyNetwork/bazel,cushon/bazel,werkt/bazel,ButterflyNetwork/bazel,cushon/bazel,meteorcloudy/bazel,davidzchen/bazel,bazelbuild/bazel,aehlig/bazel,bazelbuild/bazel,akira-baruah/bazel,ulfjack/bazel