Update fetch.bs

Co-authored-by: Valentin Gosu <[email protected]>

Author: noamr

fetch.bs

@@ -3069,7 +3069,7 @@ these steps:
  <a>implementation-defined</a> manner.
 
  <li>
-  <p>If there <var>proxies</var> is <a for=list>empty</a>, or if <var>proxies</var>
+  <p>If <var>proxies</var> is <a for=list>empty</a>, or if <var>proxies</var>
   <a for=list>contains</a> "<code>DIRECT</code>", then <a>resolve an origin</a> given <var>key</var>
   and <var>url</var>'s <a for=url>origin</a>.