Update website/docs/api/doc.md
@@ -479,7 +479,7 @@ invalidated, although they may accidentally continue to work.
Mark a span for merging. The `attrs` will be applied to the resulting token (if
they're context-dependent token attributes like `LEMMA` or `DEP`) or to the
underlying lexeme (if they're context-independent lexical attributes like
-`LOWER` or `IS_STOP`). Writable custom extension attributes can be provided using the `"_"` key and specifying a dictionary that maps attribute name to values.
+`LOWER` or `IS_STOP`). Writable custom extension attributes can be provided using the `"_"` key and specifying a dictionary that maps attribute names to values.
> #### Example
>
