Update Get-SPOHideDefaultThemes.md

Correction in the example as this cmdlet doesn't take any parameters.

Author: msbemba

sharepoint/sharepoint-ps/sharepoint-online/Get-SPOHideDefaultThemes.md

@@ -22,7 +22,7 @@ Note that this cmdlet was named **Get-HideDefaultThemes** until the December 201
 ### Example 1
 
 ```
-Get-SPOHideDefaultThemes $false
+Get-SPOHideDefaultThemes
 ```