update Roundtrip.md todo list

src/Markdig.Tests/Roundtrip.md

@@ -40,18 +40,18 @@ In order:
 - ~~cleanup NormalizeRenderer (MarkdownRenderer)~~
 - ~~deduplicate MarkdownRenderer and NormalizeRenderer code~~
 - ~~merge from main~~
-- fix `TODO: RTP: `
-- use StringSlice where possible instead of String
-- do pull request feedback
-- split HeadingBlock into AtxHeadingBlock and SetextHeadingBlock?
 - ~~fix broken pre-existing tests~~
-- document newly added syntax properties
+- ~~use StringSlice where possible instead of String~~
+- ~~document newly added syntax properties~~
+- ~~review complete PR and follow conventions~~
+- fix `TODO: RTP: `
+- do pull request feedback
 - support extensions
-- review complete PR and follow conventions
 - run perf test
 - create todo list with perf optimization focus points
 - optimize perf
 - `\0`
+- split HeadingBlock into AtxHeadingBlock and SetextHeadingBlock?
 - document how trivia are handled generically and specifically
 - write tree comparison tests?
 - write tree visualization tool?

src/Markdig.Tests/RoundtripSpecs/TestFencedCodeBlock.cs

@@ -3,7 +3,6 @@ using static Markdig.Tests.TestRoundtrip;
 
 namespace Markdig.Tests.RoundtripSpecs
 {
-    // TODO: RTP: test info strings
     [TestFixture]
     public class TestFencedCodeBlock
     {