Updatign Cassandra keys URL

Author: SnehaGunda

articles/cosmos-db/cassandra-support.md

@@ -121,7 +121,7 @@ keytool -importcert -alias bc2025ca -file bc2025.crt
 
 # Install the Cassandra libraries in order to get CQLSH:
 echo "deb http://www.apache.org/dist/cassandra/debian 311x main" | sudo tee -a /etc/apt/sources.list.d/cassandra.sources.list
-curl https://downloads.apache.org/cassandra/KEYS | sudo apt-key add -
+curl https://www.apache.org/dist/cassandra/KEYS | sudo apt-key add -
 sudo apt-get update
 sudo apt-get install cassandra