doc: prepare markdown file for upcoming formatting/linting

PR-URL: #40156
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

Author: Trott

test/README.md

@@ -17,7 +17,7 @@ For the tests to run on Windows, be sure to clone Node.js source code with the
 | ---------------- | ---------- | --------------- |
 | `abort`          | Yes        | Tests that use `--abort-on-uncaught-exception` and other situations where we want to test something but avoid generating a core file. |
 | `addons`         | Yes        | Tests for [addon](https://nodejs.org/api/addons.html) functionality along with some tests that require an addon. |
-| `async-hooks`    | Yes       | Tests for [async_hooks](https://nodejs.org/api/async_hooks.html) functionality. |
+| `async-hooks`    | Yes       | Tests for [async\_hooks](https://nodejs.org/api/async\_hooks.html) functionality. |
 | `benchmark`      | Yes       | Test minimal functionality of benchmarks. |
 | `cctest`         | Yes       | C++ tests that are run as part of the build process. |
 | `code-cache`     | No        | Tests for a Node.js binary compiled with V8 code cache. |

test/common/README.md

@@ -3,6 +3,7 @@
 Compile with clang and `wasm32-wasi` target. The clang version used must be
 built with wasi-libc. You can specify the location for clang and the sysroot
 if needed when running make:
+
 ```console
 $ make CC=/usr/local/opt/llvm/bin/clang SYSROOT=/path/to/wasi-libc/sysroot
 ```

test/wasi/README.md

@@ -15,6 +15,7 @@ WPT harness and have automatic updates. There are also a few
 This folder covers the tests that have been migrated.
 
 <a id="add-tests"></a>
+
 ## How to add tests for a new module
 
 ### 1. Create a status file
@@ -142,6 +143,7 @@ skipping tests that cannot be run because of lack of dependency or
 expected failures.
 
 <a id="status-format"></a>
+
 ## Format of a status JSON file
 
 ```text