Update Set-VHD.md

Author: msbemba

docset/winserver2012-ps/hyper-v/Set-VHD.md

@@ -48,7 +48,7 @@ This operation cannot be performed when the virtual disk chain is attached.
 
 ### Example 3
 ```
-PS C:\>Set-VHD -Path Child1.vhd -parentpath parentcopywithnewid.vhd -IgnoreMismatchId
+PS C:\>Set-VHD -Path Child1.vhd -parentpath parentcopywithnewid.vhd -IgnoreIdMismatch
 ```
 
 This example sets the parent of Child1.vhd to point to parentcopywithnewid.vhd, even though parentcopywithnewid.vhd has a different ID than the original parent of child1.vhd.