fixup! doc: use serial comma in fs docs

doc/api/fs.md

@@ -704,7 +704,7 @@ changes:
 * Returns: {Promise}
 
 Asynchronously writes data to a file, replacing the file if it already exists.
-`data` can be a string, a buffer, an {AsyncIterable} or {Iterable} object.
+`data` can be a string, a buffer, an {AsyncIterable}, or an {Iterable} object.
 The promise is resolved with no arguments upon success.
 
 If `options` is a string, then it specifies the `encoding`.
@@ -1684,7 +1684,7 @@ access(file, constants.R_OK | constants.W_OK, (err) => {
 ```
 
 Do not use `fs.access()` to check for the accessibility of a file before calling
-`fs.open()`, `fs.readFile()` or `fs.writeFile()`. Doing
+`fs.open()`, `fs.readFile()`, or `fs.writeFile()`. Doing
 so introduces a race condition, since other processes may change the file's
 state between the two calls. Instead, user code should open/read/write the
 file directly and handle the error raised if the file is not accessible.
@@ -2409,7 +2409,7 @@ has only one boolean parameter. This is one reason `fs.access()` is recommended
 instead of `fs.exists()`.
 
 Using `fs.exists()` to check for the existence of a file before calling
-`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended. Doing
+`fs.open()`, `fs.readFile()`, or `fs.writeFile()` is not recommended. Doing
 so introduces a race condition, since other processes may change the file's
 state between the two calls. Instead, user code should open/read/write the
 file directly and handle the error raised if the file does not exist.
@@ -3873,7 +3873,7 @@ Asynchronous stat(2). The callback gets two arguments `(err, stats)` where
 In case of an error, the `err.code` will be one of [Common System Errors][].
 
 Using `fs.stat()` to check for the existence of a file before calling
-`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended.
+`fs.open()`, `fs.readFile()`, or `fs.writeFile()` is not recommended.
 Instead, user code should open/read/write the file directly and handle the
 error raised if the file is not available.
 
@@ -6363,7 +6363,7 @@ changes:
 
 A {fs.Stats} object provides information about a file.
 
-Objects returned from [`fs.stat()`][], [`fs.lstat()`][] and [`fs.fstat()`][] and
+Objects returned from [`fs.stat()`][], [`fs.lstat()`][], [`fs.fstat()`][], and
 their synchronous counterparts are of this type.
 If `bigint` in the `options` passed to those methods is true, the numeric values
 will be `bigint` instead of `number`, and the object will contain additional
@@ -7521,7 +7521,7 @@ fs.open('<directory>', 'a+', (err, fd) => {
 ```
 
 On Windows, opening an existing hidden file using the `'w'` flag (either
-through `fs.open()` or `fs.writeFile()` or `fsPromises.open()`) will fail with
+through `fs.open()`, `fs.writeFile()`, or `fsPromises.open()`) will fail with
 `EPERM`. Existing hidden files can be opened for writing with the `'r+'` flag.
 
 A call to `fs.ftruncate()` or `filehandle.truncate()` can be used to reset