Fix the dash typo in lang flag of classlib in Unit testing Visual Basic page#46481

BillWagner merged 2 commits intodotnet:maindotnet/docs:mainfrom

BartoszKlonowski:fix/46461/vb-flag-incorrect-syntaxBartoszKlonowski/docs:fix/46461/vb-flag-incorrect-syntaxCopy head branch name to clipboard