feat: improve README.md

Author: hsluoyz

README.md

@@ -14,7 +14,7 @@ Mybatis Adapter is the Mybatis adapter for jCasbin, which provides interfaces fo
     <dependency>
         <groupId>org.casbin</groupId>
         <artifactId>mybatis-adapter</artifactId>
-        <version>1.0-SNAPSHOT</version>
+        <version>version</version>
     </dependency>
 
 ## Example
@@ -50,4 +50,4 @@ Mybatis Adapter is the Mybatis adapter for jCasbin, which provides interfaces fo
 
 ## License
 
-This project is under Apache 2.0 License. See the [LICENSE](LICENSE) file for the full license text.
+This project is under Apache 2.0 License. See the [LICENSE](LICENSE) file for the full license text.