Change wording per Barry's suggestion

Co-authored-by: Barry Pollard <[email protected]>

files/en-us/web/api/document/prerenderingchange_event/index.md

@@ -47,7 +47,7 @@ if (document.prerendering) {
 
 ### Measuring prerendering activations
 
-Code following the above pattern will not suffice for measuring how often a prerender is activated, because it's possible for the code to run after prerendering activation. Instead, use the following pattern:
+The previous code will not suffice for measuring how often a prerender is activated, because it's possible for that code to run after prerendering activation. Instead, use the following pattern:
 
 ```js
 if (document.prerendering) {