go/analysis/passes/tests: add pointer to where test name conventions are specified

Change-Id: Id177e04271f4549d79547b6c88a99a52058288ca
Reviewed-on: https://go-review.googlesource.com/c/tools/+/162079
Run-TryBot: Michael Matloob <matloob@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Cottrell <iancottrell@google.com>
diff --git a/go/analysis/passes/tests/tests.go b/go/analysis/passes/tests/tests.go
index 5dd0608..8232276 100644
--- a/go/analysis/passes/tests/tests.go
+++ b/go/analysis/passes/tests/tests.go
@@ -20,7 +20,10 @@
 
 The tests checker walks Test, Benchmark and Example functions checking
 malformed names, wrong signatures and examples documenting non-existent
-identifiers.`
+identifiers.
+
+Please see the documentation for package testing in golang.org/pkg/testing
+for the conventions that are enforced for Tests, Benchmarks, and Examples.`
 
 var Analyzer = &analysis.Analyzer{
 	Name: "tests",