chore: tidy up index.html (#391)

Co-authored-by: clelland <[email protected]>

index.html

@@ -205,16 +205,16 @@ <h2>
       </p>
       <p>
         Throughout this work, all time values are measured in milliseconds
-        since the start of navigation of the document [[HR-TIME]]. For
-        example, the <a data-cite="NAVIGATION-TIMING-2#performanceentry">start
-        of navigation of the document</a> occurs at time 0.
+        since the start of navigation of the document [[HR-TIME]]. For example,
+        the <a data-cite="NAVIGATION-TIMING-2#performanceentry">start of
+        navigation of the document</a> occurs at time 0.
       </p>
       <p class='note'>
         This definition of time is based on the High Resolution Time
-        specification [[HR-TIME]] and is different from the definition of
-        time used in the Navigation Timing specification
-        [[NAVIGATION-TIMING-2]], where time is measured in milliseconds since
-        midnight of January 1, 1970 (UTC).
+        specification [[HR-TIME]] and is different from the definition of time
+        used in the Navigation Timing specification [[NAVIGATION-TIMING-2]],
+        where time is measured in milliseconds since midnight of January 1,
+        1970 (UTC).
       </p>
     </section>
     <section id="sec-resource-timing">