doc: strengthen suggestion in errors.md

Sure, I'm advocating for permitting second-person pronouns in a current
PR, but the use in errors.md is superfluous and weakens the sentence.
Remove it.

PR-URL: #34390
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Juan José Arboleda <soyjuanarbol@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

Author: Trott

doc/api/errors.md

@@ -2037,7 +2037,7 @@ signal (such as [`subprocess.kill()`][]).
 <a id="ERR_UNSUPPORTED_DIR_IMPORT"></a>
 ### `ERR_UNSUPPORTED_DIR_IMPORT`
 
-`import` a directory URL is unsupported. Instead, you can
+`import` a directory URL is unsupported. Instead,
 [self-reference a package using its name][] and [define a custom subpath][] in
 the `"exports"` field of the `package.json` file.