Update doc/api/errors.md

Co-authored-by: Derek Lewis <[email protected]>

Author: Trott

doc/api/errors.md

@@ -1569,7 +1569,7 @@ which is not supported.
 ### `ERR_INVALID_REPL_INPUT`
 
 The input may not be used in the [`REPL`][]. The conditions under which this
-error is used are describe in the [`REPL`][] documentation.
+error is used are described in the [`REPL`][] documentation.
 
 <a id="ERR_INVALID_RETURN_PROPERTY"></a>
 ### `ERR_INVALID_RETURN_PROPERTY`