doc: use dashes instead of asterisks

PR-URL: #17722
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Daniel Bevenius <daniel.bevenius@gmail.com>

Author: BridgeAR

doc/guides/writing-tests.md

@@ -233,8 +233,8 @@ const freelist = require('internal/freelist');
 
 When writing assertions, prefer the strict versions:
 
-* `assert.strictEqual()` over `assert.equal()`
-* `assert.deepStrictEqual()` over `assert.deepEqual()`
+- `assert.strictEqual()` over `assert.equal()`
+- `assert.deepStrictEqual()` over `assert.deepEqual()`
 
 When using `assert.throws()`, if possible, provide the full error message:
 
@@ -258,9 +258,9 @@ available features in each release.
 
 For example:
 
-* `let` and `const` over `var`
-* Template literals over string concatenation
-* Arrow functions when appropriate
+- `let` and `const` over `var`
+- Template literals over string concatenation
+- Arrow functions when appropriate
 
 ## Naming Test Files
 

doc/releases.md

@@ -252,8 +252,8 @@ $ git push <remote> <vx.y.z>
 
 On release proposal branch, edit `src/node_version.h` again and:
 
-* Increment `NODE_PATCH_VERSION` by one
-* Change `NODE_VERSION_IS_RELEASE` back to `0`
+- Increment `NODE_PATCH_VERSION` by one
+- Change `NODE_VERSION_IS_RELEASE` back to `0`
 
 Commit this change with the following commit message format: