chore: tidy up index.html (#95)

Co-authored-by: marcoscaceres <marcoscaceres@users.noreply.github.com>

Author: github-actions[bot]

index.html

@@ -206,10 +206,11 @@ <h2>
           <p>
             Pointer lock MUST fail unless the <a>target</a>'s
             <a>shadow-including root</a> is the [=navigable/active document=]
-            of a [=Document/browsing context=] which is (or has an [=tree/ancestor=]
-            [=Document/browsing context=] which is) in focus by a window which is in
-            focus by the operating system's window manager. The <a>target</a>
-            element and its [=Document/browsing context=] need not be in focus.
+            of a [=Document/browsing context=] which is (or has an
+            [=tree/ancestor=] [=Document/browsing context=] which is) in focus
+            by a window which is in focus by the operating system's window
+            manager. The <a>target</a> element and its [=Document/browsing
+            context=] need not be in focus.
           </p>
           <p>
             Pointer lock is a <a>transient activation-gated API</a>, therefore