Roadmap: Update for sync and async policies

Polly-Roadmap.md

@@ -59,7 +59,11 @@ Policy
   .Execute(...);
 ```
 
-**EDIT**: A [partial syntax proposal to address split sync/async policies](https://github.com/App-vNext/Polly/issues/281) now also exists: comment welcome!
+## Remove split between sync and async policies
+
+A [partial syntax proposal to address split sync/async policies](https://github.com/App-vNext/Polly/issues/281) now exists: comment welcome!
+
+This would likely be implemented in combination with the syntax refresh above.  This is a large piece of work requiring a major time investment.
 
 # Inactive