address PR review comments

Author: dlepow

articles/api-management/api-management-howto-mutual-certificates-for-clients.md

@@ -39,7 +39,7 @@ Using key vault certificates is recommended because it helps improve API Managem
 * If you have not created an API Management service instance yet, see [Create an API Management service instance](get-started-create-service-instance.md).
 * You need access to the certificate and the password for management in an Azure key vault or upload to the API Management service. The certificate must be in **PFX** format. Self-signed certificates are allowed. 
 
-    If you use a self-signed certificate, also install trusted root and intermeidate [CA certificates](api-management-howto-ca-certificates.md) in your API Management instance.
+    If you use a self-signed certificate, also install trusted root and intermediate [CA certificates](api-management-howto-ca-certificates.md) in your API Management instance.
 
     > [!NOTE]
     > CA certificates for certificate validation are not supported in the Consumption tier.

includes/api-management-client-certificate-key-vault.md

@@ -45,7 +45,7 @@ To add a key vault certificate to API Management:
 
 
 
-    :::image type="content" source="../articles/api-management/media/api-management-howto-mutual-certificates/apim-client-cert-kv.png" alt-text="Add key vault certificate":::
+    :::image type="content" source="../articles/api-management/media/api-management-howto-mutual-certificates/apim-client-cert-kv.png" alt-text="Screenshot of adding a key vault certificate to API Management in the portal.":::
 
 1. Select **Save**.
 
@@ -61,7 +61,7 @@ To upload a client certificate to API Management:
 1. Browse to select the certificate .pfx file, and enter its password.
 1. Select **Add**.
 
-    :::image type="content" source="../articles/api-management/media/api-management-howto-mutual-certificates/apim-client-cert-add.png" alt-text="Upload client certificate":::
+    :::image type="content" source="../articles/api-management/media/api-management-howto-mutual-certificates/apim-client-cert-add.png" alt-text="Screenshot of uploading a client certificate to API Management in the portal.":::
 
 
 1. Select **Save**.