fix: improve grammar and typo

Author: Trent1900

README.md

@@ -24,7 +24,7 @@ const url = 'https://konvajs.github.io/assets/yoda.jpg';
 function SimpleApp() {  
   const [image] = useImage(url);
 
-  // "image" will DOM image element or undefined
+  // "image" will be DOM image element or undefined
 
   return (
     <Image image={image} />

index.js

@@ -54,7 +54,7 @@ module.exports = function useImage(url, crossOrigin, referrerpolicy) {
     [url, crossOrigin, referrerpolicy]
   );
 
-  // return array because it it better to use in case of several useImage hooks
+  // return array because it is better to use in case of several useImage hooks
   // const [background, backgroundStatus] = useImage(url1);
   // const [patter] = useImage(url2);
   return [imageRef.current, statusRef.current];