chore: refine readme

Author: DoneDeal0

README.md

@@ -36,25 +36,32 @@
 <p align="center">
 <sub>Comparing millions of entries in real time with <code>streamListDiff</code></sub>
 </p>
+<br/>
 
 ![superdiff-text-diff-demo](https://raw.githubusercontent.com/DoneDeal0/superdiff/main/assets/get-text-diff-demo.png)
 
 <p align="center">
 <sub>Detecting text changes with <code>getTextDiff</code></sub>
 </p>
 
+<br/>
+
 ![superdiff-geo-diff-demo](https://raw.githubusercontent.com/DoneDeal0/superdiff/main/assets/get-geo-diff-demo.png)
 
 <p align="center">
 <sub>Tracking coordinate changes with <code>getGeoDiff</code></sub>
 </p>
 
+<br/>
+
 ![superdiff-get-object-diff-demo](https://raw.githubusercontent.com/DoneDeal0/superdiff/main/assets/get-object-diff-demo.png)
 
 <p align="center">
 <sub>Diffing deeply nested objects with <code>getObjectDiff</code></sub>
 </p>
 
+<br/>
+
 <hr/>
 
 ## ⚔ COMPETITORS