(GH-307) Fix typo in get-started example (#308)

This change removes an erroneous dash from an example command,
and fixes #307

Author: michaeltlombardi

dsc/docs-conceptual/dsc-3.0/get-started/index.md

@@ -122,7 +122,7 @@ Run the following command to display only the resources available with the
 
 ```powershell
 $adaptedResources |
-  Where-Object -requireAdapter -EQ Microsoft.Windows/WindowsPowerShell |
+  Where-Object requireAdapter -EQ Microsoft.Windows/WindowsPowerShell |
   Format-Table -Property type, kind, version, capabilities, description
 ```