Merge pull request remix-run#2872 from vishaltelangre/patch-1

Fix typo 'router' to 'history' in v2.0.0 upgrade guide

Author: taion

upgrade-guides/v2.0.0.md

@@ -260,7 +260,7 @@ For custom link-like components, the same applies for `router.isActive`, previou
 
 ```js
 // v1.0.x
-router.isActive(pathname, query, indexOnly)
+history.isActive(pathname, query, indexOnly)
 
 // v2.0.0
 router.isActive({ pathname, query }, indexOnly)