Update description for DisableClassicPageBaselineSecurityMode#1084

aditisrivastava07 merged 2 commits intoMicrosoftDocs:mainMicrosoftDocs/OfficeDocs-SharePoint-PowerShell:mainfrom

libihan:user/bihl/DisableClassicPageBaselineSecurityModelibihan/OfficeDocs-SharePoint-PowerShell:user/bihl/DisableClassicPageBaselineSecurityModeCopy head branch name to clipboard