docs: update README

Author: congcoi123

README.md

@@ -49,7 +49,7 @@ Start a functional game server in 5 minutes (even less)
 <dependency>
     <groupId>io.github.congcoi123</groupId>
     <artifactId>tenio-core</artifactId>
-    <version>0.7.2</version>
+    <version>0.7.3</version>
 </dependency>
 ```
 2. Initialize a game server