Update readme

Author: coj337

ReadMe.md

@@ -33,7 +33,7 @@ Subdominator.exe -d sub.example.com
 -t, --threads <threads>  Number of domains to check at once [default: 50]
 -v, --verbose            Print extra information
 -eu, --exclude-unlikely  Exclude unlikely (edge-case) fingerprints
--c, --csv <csv>          Heading to parse for CSV file. Forces -l to read as CSV instead of line-delimited
+-c, --csv <csv>          Column index or heading to parse for CSV file. Forces -l to read as CSV instead of line-delimited
 --validate               Validate the takeovers are exploitable (where possible)
 --version                Show version information
 -?, -h, --help           Show help and usage information

Subdominator/Program.cs

@@ -25,7 +25,7 @@ public static async Task Main(string[] args)
         var optionThreads = new Option<int>(new[] { "-t", "--threads" }, () => 50, "Number of domains to check at once");
         var optionVerbose = new Option<bool>(new[] { "-v", "--verbose" }, "Print extra information");
         var optionExcludeUnlikely = new Option<bool>(new[] { "-eu", "--exclude-unlikely" }, "Exclude unlikely (edge-case) fingerprints");
-        var optionCsv = new Option<string>(new[] { "-c", "--csv" }, "Heading or column number to parse for CSV file. Forces -l to read as CSV instead of line-delimited");
+        var optionCsv = new Option<string>(new[] { "-c", "--csv" }, "Heading or column index to parse for CSV file. Forces -l to read as CSV instead of line-delimited");
         var optionValidate = new Option<bool>(new[] { "--validate" }, "Validate the takeovers are exploitable (where possible)");
 
         rootCommand.AddOption(optionDomain);