Add bug numbers to track todos

Author: Lakshmi Priya Sekar

src/Microsoft.DotNet.CodeFormatting/Rules/HasUnderScoreInPrivateFieldNames.cs

@@ -16,7 +16,7 @@
 namespace Microsoft.DotNet.CodeFormatting.Rules
 {
     // [RuleOrder(10)]
-    // TODO: Deactivated due to active bug in Roslyn.
+    // TODO Bug 1086632: Deactivated due to active bug in Roslyn.
     // There is a hack to run this rule, but it's slow. 
     // If needed, enabled rule and enable the hack at the code below in RenameFields.
     internal sealed class HasUnderScoreInPrivateFieldNames : IFormattingRule

src/Microsoft.DotNet.CodeFormatting/Rules/IsFormattedFormattingRule.cs

@@ -19,7 +19,7 @@ internal sealed class IsFormattedFormattingRule : IFormattingRule
         public async Task<Document> ProcessAsync(Document document, CancellationToken cancellationToken)
         {
             var newDocument = await Formatter.FormatAsync(document, cancellationToken: cancellationToken);
-            // TODO: Roslyn formatter doesn't format code in #if false as it's considered as DisabledTextTrivia. Will be removed after the bug is fixed.
+            // TODO Bug 1076609: Roslyn formatter doesn't format code in #if false as it's considered as DisabledTextTrivia. Will be removed after the bug is fixed.
             // Doing that manually here
             var preprocessorNames = document.DefinedProjectPreprocessorNames();
             newDocument = await newDocument.GetNewDocumentWithPreprocessorSymbols(preprocessorNames, cancellationToken);