Update quick-create-portal.md

Hi Team,

This PR fixes a typo. The dot has been wrongly translated in [Japanese version](https://docs.microsoft.com/ja-jp/azure/virtual-machines/linux/quick-create-portal).

Best regards,

Author: momoto

articles/virtual-machines/linux/quick-create-portal.md

@@ -49,7 +49,7 @@ Log in to the Azure portal at http://portal.azure.com
 
 3. Provide a VM name, such as *myVM*, leave the disk type as *SSD*, then provide a username, such as *azureuser*.
 
-4. . For **Authentication type**, select **SSH public key**, then paste your public key into the text box. Take care to remove any leading or trailing white space in your public key.
+4. For **Authentication type**, select **SSH public key**, then paste your public key into the text box. Take care to remove any leading or trailing white space in your public key.
 
     ![Enter basic information about your VM in the portal blade](./media/quick-create-portal/create-vm-portal-basic-blade.png)