Update testing.md
Update testing.md

Target must be named "myrules_test" or command `bazel test //mypkg:myrules_test` needs to be changed to `bazel test //mypkg:myrules_tests`

Closes #10932.

PiperOrigin-RevId: 301461579

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