style: usage space modify in readme

Author: kimcoder

.prettierignore

@@ -1,5 +1,4 @@
 dist
 example/index.js
 *.json
-*.md
 .babelrc

README.md

@@ -39,25 +39,25 @@ yarn add react-simple-image-slider
 import SimpleImageSlider from "react-simple-image-slider";
 
 const images = [
-	{ url: "images/1.jpg" },
-	{ url: "images/2.jpg" },
-	{ url: "images/3.jpg" },
-	{ url: "images/4.jpg" },
-	{ url: "images/5.jpg" },
-	{ url: "images/6.jpg" },
-	{ url: "images/7.jpg" },
+  { url: "images/1.jpg" },
+  { url: "images/2.jpg" },
+  { url: "images/3.jpg" },
+  { url: "images/4.jpg" },
+  { url: "images/5.jpg" },
+  { url: "images/6.jpg" },
+  { url: "images/7.jpg" },
 ];
 
 const App = () => {
-	return (
-		<div>
-			<SimpleImageSlider
-				width={896}
-				height={504}
-				images={images}
-			/>
-		</div>
-	);
+  return (
+    <div>
+      <SimpleImageSlider
+        width={896}
+        height={504}
+        images={images}
+      />
+    </div>
+  );
 }
 ```