Typo

Author: jakearchibald

dom.bs

@@ -1603,7 +1603,7 @@ the following:
    <ol>
     <li>If |options|' <code>signal</code>'s [=AbortSignal/aborted flag=] is set, [=reject=] |p|
     with an "{{AbortError}}" {{DOMException}} and return |p|.
-    <li>[=AbortSignal/Add|Add the following abort steps=] |options|' <code>signal</code>:
+    <li>[=AbortSignal/Add|Add the following abort steps=] to |options|' <code>signal</code>:
      <ol>
       <li>Stop doing amazing things.
       <li>[=Reject=] |p| with an "{{AbortError}}" {{DOMException}}.