Fixed Az.DeploymentManager examples (Azure#16792)

Author: ziyuezh576

src/DeploymentManager/DeploymentManager/help/Get-AzDeploymentManagerStep.md

@@ -46,7 +46,6 @@ PS C:\> New-AzDeploymentManagerStep -ResourceGroupName ContosoResourceGroup -Nam
 This command gets a step named ContosoService1WaitStep in ContosoResourceGroup.
 
 ### Example 2: Get a step using the resource identifier
-### Example 1
 ```powershell
 PS C:\> Get-AzDeploymentManagerStep -ResourceId "/subscriptions/subscriptionId/resourcegroups/ContosoResourceGroup/providers/Microsoft.DeploymentManager/steps/ContosoService1WaitStep"
 ```

src/DeploymentManager/DeploymentManager/help/Remove-AzDeploymentManagerArtifactSource.md

@@ -37,7 +37,6 @@ Specify the artifact source by its name and resource group name. Alternately, yo
 ## EXAMPLES
 
 ### Example 1: Delete an artifact source
-### Example 1
 ```powershell
 PS C:\> Remove-AzDeploymentManagerArtifactSource -ResourceGroupName "ContosoResourceGroup" -Name "ContosoArtifactSource"
 ```

src/DeploymentManager/DeploymentManager/help/Remove-AzDeploymentManagerStep.md

@@ -51,7 +51,6 @@ PS C:\> Remove-AzDeploymentManagerStep -ResourceId "/subscriptions/subscriptionI
 This command deletes a step named ContosoService1WaitStep in ContosoResourceGroup.
 
 ### Example 3: Remove a step using an object returned by New-AzDeploymentManagerStep
-### Example 1
 ```powershell
 PS C:\> Remove-AzDeploymentManagerStep -InputObject $stepObject
 ```