feat: usePrevious

Author: NelsonYong

packages/hooks/src/usePrevious/index.en-US.md

@@ -13,14 +13,14 @@ A Hook to return the previous state.
 <demo src="./demo/demo.vue"
   language="vue"
   title="Basic usage"
-  desc="Record the previous value."> </demo>
+  desc="Record the previous value"> </demo>
 
 ## Custom shouldUpdate function
 
 <demo src="./demo/demo1.vue"
   language="vue"
   title="Custom shouldUpdate function"
-  desc="Previous value update only when the shouldUpdate function return true."> </demo>
+  desc="Previous value update only when the shouldUpdate function return true"> </demo>
 
 ## Result