edit version and add key elements

sdk/communication/azure-communication-email/README.md

@@ -51,22 +51,17 @@ and then include the direct dependency in the dependencies section without the v
 If you want to take dependency on a particular version of the library that is not present in the BOM,
 add the direct dependency to your project as follows.
 
-[//]: # ({x-version-update-start;com.azure:azure-communication-email;current})
+[//]: # ({x-version-update-start;com.azure:azure-communication-email;dependency})
 
 ```xml
 <dependency>
     <groupId>com.azure</groupId>
     <artifactId>azure-communication-email</artifactId>
-    <version>1.2.0-beta.1</version>
 </dependency>
 ```
 
 [//]: # ({x-version-update-end})
 
-## Key concepts
-
-> More details coming soon.
-
 ## Examples
 
 `EmailClient` provides the functionality to send email messages .