Rename some help files

[Youri970410]

Description

Fix #13860
Rename some help files

Checklist

• I have read the Submitting Changes section of CONTRIBUTING.md
• The title of the PR is clear and informative
• The appropriate ChangeLog.md file(s) has been updated:
  • For any service, the ChangeLog.md file can be found at src/{{SERVICE}}/{{SERVICE}}/ChangeLog.md
  • A snippet outlining the change(s) made in the PR should be written under the ## Upcoming Release header -- no new version header should be added
• The PR does not introduce breaking changes
• If applicable, the changes made in the PR have proper test coverage
• For public API changes to cmdlets:
  • a cmdlet design review was approved for the changes in this repository (Microsoft internal only)
    • {Please put the link here}
  • the markdown help files have been regenerated using the commands listed here

[isra-fel]

Why are some help files deleted?

[Youri970410]

@isra-fel
Those cmdlets do not exist now so we need to remove the help files of them,"Az.ResourceGrap" is not fixed now.Here are a list for all cmdlets:

ServiceName	Cmdlet Name	Issue
Az.Aks	Disable-AzAksAddon	"On" is different from "on"
Az.Aks	Enable-AzAksAddon	"On" is different from "on"
Az.Compute	Invoke-AzVmPatchAssessment	"VM“ is different from "Vm"
Az.Network	Disconnect-AzP2sVpnGatewayVpnConnection	"S" is different from "s"
Az.Network	Get-AzExpressRouteCrossConnectionARPTable	"RP" is different from "pr"
Az.OperationalInsights	Get-AzOperationalInsightsLinkTarget	Alias Cmdlet and  Help file do not regenerate
Az.OperationalInsights	Get-AzOperationalInsightsSavedSearchResult	Alias Cmdlet and  Help file do not regenerate
Az.OperationalInsights	Get-AzOperationalInsightsSearchResult	Alias Cmdlet and  Help file do not regenerate
Az.ResourceGraph	Search-AzGraph	Do not exist in psd1
Az.Security	DIsable-AzSecurityAdvancedThreatProtection	"I" is different from "i"
Az.Sql	Disable-AzSqlServerAdvancedThreatProtection	Alias Cmdlet and  Help file do not regenerate
Az.Sql	Enable-AzSqlServerAdvancedThreatProtection	Alias Cmdlet and  Help file do not regenerate
Az.Storage	Set-AzDataLakeGen2ItemACLObject	"CL" is different from  "cl"

[Youri970410]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[isra-fel]

LGTM