fix incorrect badge url for cosmosdb starter url (#505)

README.md

@@ -27,7 +27,7 @@ Starter Name | Version
 [azure-active-directory-spring-boot-starter](azure-spring-boot-starters/azure-active-directory-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-active-directory-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-active-directory-spring-boot-starter%22)
 [azure-storage-spring-boot-starter](azure-spring-boot-starters/azure-storage-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-storage-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-storage-spring-boot-starter%22)
 [azure-keyvault-secrets-spring-boot-starter](azure-spring-boot-starters/azure-keyvault-secrets-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-keyvault-secrets-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-keyvault-secrets-spring-boot-starter%22)
-[azure-cosmosdb-spring-boot-starter](azure-spring-boot-starters/azure-cosmosdb-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-documentdb-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-documentdb-spring-boot-starter%22)
+[azure-cosmosdb-spring-boot-starter](azure-spring-boot-starters/azure-cosmosdb-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-cosmosdb-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-cosmosdb-spring-boot-starter%22)
 [azure-mediaservices-spring-boot-starter](azure-spring-boot-starters/azure-mediaservices-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-mediaservices-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-mediaservices-spring-boot-starter%22)
 [azure-servicebus-spring-boot-starter](azure-spring-boot-starters/azure-servicebus-spring-boot-starter/README.md) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/azure-servicebus-spring-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22azure-servicebus-spring-boot-starter%22)
 [spring-data-gremlin-boot-starter](azure-spring-boot-starters/spring-data-gremlin-boot-starter) | [![Maven Central](https://img.shields.io/maven-central/v/com.microsoft.azure/spring-data-gremlin-boot-starter.svg)](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22com.microsoft.azure%22%20AND%20a%3A%22spring-data-gremlin-boot-starter%22)