Update keep-alive.md

Author: HP8585

src/guide/built-ins/keep-alive.md

@@ -135,8 +135,7 @@ Note that:
 
 - <span class="composition-api">`onActivated`</span><span class="options-api">`activated`</span> is also called on mount, and <span class="composition-api">`onDeactivated`</span><span class="options-api">`deactivated`</span> on unmount.
 
-- Both hooks work for not only the root component cached by `<KeepAlive>`, but also descendant components in the cached tree.
-
+- Both hooks work for not only the root component cached by `<KeepAlive>`, but also the descendant components in the cached tree.
 ---
 
 **Related**