Fixing insecure link

Author: SnehaGunda

articles/cosmos-db/cassandra-introduction.md

@@ -30,7 +30,7 @@ The Cassandra API enables you to interact with data stored in Azure Cosmos DB us
 
 **Choice of consistency**: Azure Cosmos DB provides the choice of five well-defined consistency levels to achieve optimal tradeoffs between consistency and performance. These consistency levels are strong, bounded-staleness, session, consistent prefix and eventual. These well-defined, practical, and intuitive consistency levels allow developers to make precise trade-offs between consistency, availability, and latency. Learn more in [consistency levels](consistency-levels.md) article. 
 
-**Enterprise grade**: Azure cosmos DB provides [compliance certifications](http://www.microsoft.com/trustcenter) to ensure users can use the platform securely. Azure Cosmos DB also provides encryption at rest and in motion, IP firewall, and audit logs for control plane activities.
+**Enterprise grade**: Azure cosmos DB provides [compliance certifications](https://www.microsoft.com/trustcenter) to ensure users can use the platform securely. Azure Cosmos DB also provides encryption at rest and in motion, IP firewall, and audit logs for control plane activities.
 
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