Add missing accessibility modifiers

src/Tools/dotnet-format/CodeFormatter.cs

@@ -21,7 +21,7 @@ namespace Microsoft.CodeAnalysis.Tools.CodeFormatter
 {
     internal static class CodeFormatter
     {
-        const int MaxLoggedWorkspaceWarnings = 5;
+        private const int MaxLoggedWorkspaceWarnings = 5;
 
         public static async Task<int> FormatWorkspaceAsync(ILogger logger, string solutionOrProjectPath, bool isSolution, bool logAllWorkspaceWarnings, CancellationToken cancellationToken)
         {

src/Tools/dotnet-format/Program.cs

@@ -14,11 +14,11 @@
 
 namespace Microsoft.CodeAnalysis.Tools.CodeFormatter
 {
-    class Program
+    internal class Program
     {
-        static readonly string[] _verbosityLevels = new[] { "q", "quiet", "m", "minimal", "n", "normal", "d", "detailed", "diag", "diagnostic" };
+        private static readonly string[] _verbosityLevels = new[] { "q", "quiet", "m", "minimal", "n", "normal", "d", "detailed", "diag", "diagnostic" };
 
-        static async Task<int> Main(string[] args)
+        private static async Task<int> Main(string[] args)
         {
             var parser = new CommandLineBuilder(new Command("dotnet-format", handler: CommandHandler.Create(typeof(Program).GetMethod(nameof(Run)))))
                 .UseParseDirective()