Fix build issue

Author: recvfrom

index.bs

@@ -1529,8 +1529,7 @@ To <dfn export id=blob-url-obtain-object>obtain a blob object</dfn> given a [=bl
 |blobUrlEntry|, an [=environment=] or the string "`navigation`" |environment|:
 
 1. Let |isAuthorized| be true.
-1. If |environment| is not the string "`navigation`", then set |isAuthorized| to the result of
-[=checking for same-partition blob URL usage=] with |blobUrlEntry| and |environment|.
+1. If |environment| is not the string "`navigation`", then set |isAuthorized| to the result of [=checking for same-partition blob URL usage=] with |blobUrlEntry| and |environment|.
 1. If |isAuthorized| is false, then return failure.
 1. Return |blobUrlEntry|'s object.