docs: unified test names

see: denoland/std#3754

runtime/manual/references/contributing/style_guide.md

@@ -313,20 +313,22 @@ For a better understanding of the tests, function should be correctly named as
 it's prompted throughout the test command. Like:
 
 ```
-test myTestFunction ... ok
+foo() returns bar object ... ok
 ```
 
 Example of test:
 
-```ts, ignore
+```ts
 import { assertEquals } from "https://deno.land/std@$STD_VERSION/assert/mod.ts";
 import { foo } from "./mod.ts";
 
-Deno.test("myTestFunction", function () {
+Deno.test("foo() returns bar object", function () {
   assertEquals(foo(), { bar: "bar" });
 });
 ```
 
+Note: See [tracking issue](https://github.com/denoland/deno_std/issues/3754) for more information.
+
 ### Top-level functions should not use arrow syntax.
 
 Top-level functions should use the `function` keyword. Arrow syntax should be