fix typo

Author: darshanhs90

src/ResourceManager/Resources/Commands.Resources/RoleDefinitions/GetAzureRoleDefinitionCommand.cs

@@ -48,7 +48,7 @@ public class GetAzureRoleDefinitionCommand : ResourcesBaseCmdlet
 
         [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true, ParameterSetName = ParameterSet.RoleDefinitionName, HelpMessage = "If specified, displays the the roles at and below scope.")]
         [Parameter(Mandatory = false, ValueFromPipelineByPropertyName = true, ParameterSetName = ParameterSet.RoleDefinitionCustom, HelpMessage = "If specified, displays the the roles at and below scope.")]
-        [Obsolete("GEt-AzureRmRoleDefinition: The parameter \"AtScopeAndBelow\" is being removed in an upcoming breaking change release.")]
+        [Obsolete("Get-AzureRmRoleDefinition: The parameter \"AtScopeAndBelow\" is being removed in an upcoming breaking change release.")]
         public SwitchParameter AtScopeAndBelow { get; set; }
 
         public override void ExecuteCmdlet()