squash: adjust example

test/common/README.md

@@ -312,15 +312,15 @@ Use of this function is encouraged for relevant regression tests and for new
 APIs that work with user-provided objects.
 
 ```mjs
-import { promises as fs } from 'node:fs';
+import { open } from 'node:fs/promises';
 import { mustNotMutate } from '../common/index.mjs';
 
 const _mutableOptions = { length: 4, position: 8 };
 const options = mustNotMutate(_mutableOptions);
 
-// In filehandle.read or filehandle.write attempt to mutate options will throw
+// In filehandle.read or filehandle.write, attempt to mutate options will throw
 // In the test code, options can still be mutated via _mutableOptions
-const fh = await fs.open('/path/to/file', 'r+');
+const fh = await open('/path/to/file', 'r+');
 const { buffer } = await fh.read(options);
 _mutableOptions.position = 4;
 await fh.write(buffer, options);