New Issue: Remove 'foo$' style names in sync documentation

19152, "ben-albrecht", "Remove 'foo$' style names in sync documentation", "2022-02-01T16:47:36Z"

Now that implicit read/writes of syncs are deprecated (Deprecate implicit reads/writes for sync/single by mppf · Pull Request #17287 · chapel-lang/chapel · GitHub), it is no longer suggested to annotate syncs by appending $ to their variable name. However, our documentation on syncs still uses this naming style:

Should we update these to remove the foo$ naming style of sync variables?