Fix typo and update image alt text

Author: Ruchika-mittal01

defender-endpoint/enable-attack-surface-reduction.md

@@ -132,7 +132,7 @@ The following procedures for enabling attack surface reduction rules include ins
 ### Intune
 
 > [!IMPORTANT]
-> If using Intune on Windows Server 2012 R2 and Windows Server 2016 unified version, you need to set these to `Not Configured`, because they're not not supported on these OS versions. Otherwise, the following policies fail to apply:
+> If using Intune on Windows Server 2012 R2 and Windows Server 2016 unified version, you need to set these to `Not Configured`, because they're not supported on these OS versions. Otherwise, the following policies fail to apply:
 > - Block persistence through Windows Management Instrumentation (WMI) event subscription
 > - Block JavaScript or VBScript from launching downloaded executable content
 > - Use advanced protection against ransomware
@@ -233,7 +233,7 @@ You can use Microsoft Intune OMA-URI to configure custom attack surface reductio
 
 11. Select **Next**. In step **6 Review + create**, review the settings and information you've selected and entered, and then select **Create**.
 
-   :::image type="content" source="media/mem08-6-review-create.png" alt-text="The Review and create option in the Microsoft Intune admin center portal" lightbox="media/mem08-6-review-create.png":::
+   :::image type="content" source="media/mem08-6-review-create.png" alt-text="Screenshot showing the Review and create option in the Microsoft Intune admin center portal." lightbox="media/mem08-6-review-create.png":::
 
    Rules are active and live within minutes.