Fix example output of `BigInteger(Int64)`#11035

BillWagner merged 4 commits intodotnet:maindotnet/dotnet-api-docs:mainfrom

Rageking8:fix-example-output-of-biginteger-int64Rageking8/dotnet-api-docs:fix-example-output-of-biginteger-int64Copy head branch name to clipboard