Added. to the alt text

Added. to the alt text

Author: sreekzz

articles/hdinsight/kafka/apache-esp-kafka-ssl-encryption-authentication.md

@@ -128,15 +128,15 @@ To complete the configuration modification, do the following steps:
 1. Under **Kafka Broker** set the **listeners** property to `PLAINTEXT://localhost:9092,SASL_SSL://localhost:9093`
 1. Under **Advanced kafka-broker** set the **security.inter.broker.protocol** property to `SASL_SSL`
 
-    :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-with-sasl.png" alt-text="Screenshot showing how to edit  Kafka sasl configuration properties in Ambari" border="true":::
+    :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-with-sasl.png" alt-text="Screenshot showing how to edit  Kafka sasl configuration properties in Ambari." border="true":::
 
 1. Under **Custom kafka-broker** set the **ssl.client.auth** property to `required`. 
 
    
    > [!Note] 
    > This step is only required if you are setting up authentication and encryption.
    
-    :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/editing-configuration-ambari2.png" alt-text="Screenshot showing how to edit Kafka ssl configuration properties in Ambari" border="true":::
+    :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/editing-configuration-ambari2.png" alt-text="Screenshot showing how to edit Kafka ssl configuration properties in Ambari." border="true":::
 
 1. Here's the screenshot that shows Ambari configuration UI with these changes.
 
@@ -149,11 +149,11 @@ To complete the configuration modification, do the following steps:
 
 	a. If you are setting up authentication and encryption, then the screenshot will look like
 
-     :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-authentication-as-required.png" alt-text="Screenshot showing how to edit Kafka-env template property in Ambari authentication as required" border="true":::
+     :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-authentication-as-required.png" alt-text="Screenshot showing how to edit Kafka-env template property in Ambari authentication as required." border="true":::
 
 	b. If you are setting up encryption only, then the screenshot will look like  
 
-     :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-authentication-as-none.png" alt-text="Screenshot showing how to edit Kafka-env template property in Ambari authentication as none" border="true":::
+     :::image type="content" source="./media/apache-kafka-ssl-encryption-authentication/properties-file-authentication-as-none.png" alt-text="Screenshot showing how to edit Kafka-env template property in Ambari authentication as none." border="true":::
 
 1. Restart all Kafka brokers.