doc: fix descriptions of sync methods in fs.md

PR-URL: #21747
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Jon Moss <me@jonathanmoss.me>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

doc/api/fs.md

@@ -2336,7 +2336,7 @@ Synchronous readdir(3).
 
 The optional `options` argument can be a string specifying an encoding, or an
 object with an `encoding` property specifying the character encoding to use for
-the filenames passed to the callback. If the `encoding` is set to `'buffer'`,
+the filenames returned. If the `encoding` is set to `'buffer'`,
 the filenames returned will be passed as `Buffer` objects.
 
 ## fs.readFile(path[, options], callback)
@@ -2508,7 +2508,7 @@ Synchronous readlink(2). Returns the symbolic link's string value.
 
 The optional `options` argument can be a string specifying an encoding, or an
 object with an `encoding` property specifying the character encoding to use for
-the link path passed to the callback. If the `encoding` is set to `'buffer'`,
+the link path returned. If the `encoding` is set to `'buffer'`,
 the link path returned will be passed as a `Buffer` object.
 
 ## fs.readSync(fd, buffer, offset, length, position)
@@ -2666,7 +2666,7 @@ Only paths that can be converted to UTF8 strings are supported.
 
 The optional `options` argument can be a string specifying an encoding, or an
 object with an `encoding` property specifying the character encoding to use for
-the path passed to the callback. If the `encoding` is set to `'buffer'`,
+the path returned. If the `encoding` is set to `'buffer'`,
 the path returned will be passed as a `Buffer` object.
 
 On Linux, when Node.js is linked against musl libc, the procfs file system must