Update articles/virtual-machines/shared-image-galleries.md

Author: Jak-MS

articles/virtual-machines/shared-image-galleries.md

@@ -109,7 +109,7 @@ Specialized VMs haven't been through a process to remove machine specific inform
 - The `osProfile` is how some sensitive information is passed to the VM, using `secrets`. This may cause issues using KeyVault, WinRM and other functionality that uses `secrets` in the `osProfile`. In some cases, you can use managed service identities (MSI) to work around these limitations.
 
 > [!NOTE]  
-> Generalized and specialized VM images contain operating system disk and all the attached disks (if there is any). 
+> Generalized and specialized VM images contain an operating system disk and all the attached disks, if there any. 
 
 
 ## Updating resources