Update dependency-management.adoc

spring-cloud-alibaba-docs/src/main/asciidoc/dependency-management.adoc

@@ -8,7 +8,7 @@ If you’re a Maven Central user, add our BOM to your pom.xml <dependencyManagem
         <dependency>
             <groupId>com.alibaba.cloud</groupId>
             <artifactId>spring-cloud-alibaba-dependencies</artifactId>
-            <version>2.2.4.RELEASE</version>
+            <version>2021.0.1.0</version>
             <type>pom</type>
             <scope>import</scope>
         </dependency>
@@ -17,4 +17,3 @@ If you’re a Maven Central user, add our BOM to your pom.xml <dependencyManagem
 ```
 
 In the following sections, it will be assumed you are using the Spring Cloud Alibaba BOM and the dependency snippets will not contain versions.
-