doc: fix awkward sentence for fs.utimes()

doc/api/fs.md

@@ -1657,7 +1657,7 @@ Note: the arguments `atime` and `mtime` of the following related functions
 follow these rules:
 
 - The value should be a Unix timestamp in seconds. For example, `Date.now()`
-  returns milliseconds, so it should be divided by 1000 before passing it in.
+  returns milliseconds, so divide it by 1000 before passing it in.
 - If the value is a numeric string like `'123456789'`, the value will get
   converted to the corresponding number.
 - If the value is `NaN` or `Infinity`, the value will get converted to