Remove uids from metadata docs (Script 2)

Program.cs

using System;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using static System.IO.SearchOption;

namespace RemoveDuplicateUids
{
    class Program
    {
        static void Main()
        {
            string path = @"C:\Users\XXXXXXXXXX\Documents\GitHub\docs-1\add\metadata\";
            
            var files = Directory.EnumerateFiles(path, "*.md", AllDirectories);
            Regex regExp = new Regex(@"---(.*?)---", RegexOptions.Compiled | RegexOptions.Singleline);
            var countFiles = 0;

            foreach (var file in files)
            {
                var fileText = File.ReadAllText(file);
                var captures = regExp.Matches(fileText);
                var uniqueCaptures = captures
                    .OfType<Match>()
                    .Select(m => m.Value)
                    .Distinct()
                    .ToList();

                var capturesCount = captures.Count();
                var uniqueCapturesCount = uniqueCaptures.Count();

                if (capturesCount > uniqueCapturesCount)
                {
                    countFiles++;
                    Console.WriteLine($"{file.Substring(path.Length)} Captures: {capturesCount} Unique Captures: {uniqueCapturesCount}");

                    using (System.IO.StreamWriter outfile = new System.IO.StreamWriter(file))
                    {
                        int i;
                        for (i = 0; i < uniqueCaptures.Count() - 1; i++)
                        {
                            outfile.WriteLine(uniqueCaptures[i] + Environment.NewLine);
                        }
                        outfile.WriteLine(uniqueCaptures[i]);
                    }
                }
            }

            Console.WriteLine($"Total files updated: {countFiles}");

        }
    }
}