[docs] Note new naming scheme for threads in tracy (#7279)
We should probably update the screenshots too, but I'm not confident
enough I've got it set up right to do that yet.
diff --git a/docs/developers/developing_iree/profiling_with_tracy.md b/docs/developers/developing_iree/profiling_with_tracy.md
index ad6d620..516b049 100644
--- a/docs/developers/developing_iree/profiling_with_tracy.md
+++ b/docs/developers/developing_iree/profiling_with_tracy.md
@@ -222,8 +222,8 @@
view tends to be zoomed-in a lot. Either use the mouse directly to zoom out and
navigate, to look for the 'Frame' control at the top of the Tracy window. Use
the 'next frame' arrow button until more interesting threads appear. Typically,
-IREE generated code tends to run on a thread named `cpu0`, which is actually a
-thread name and unrelated to `CPU0` from the systrace view.
+IREE generated code tends to run on a thread named `worker[0]` (the screenshot
+here shows old names that were like `cpu0`).
Once you have identified the thread of interest, use its ghost icon to toggle
between instrumentation and ghost zones, and zoom until you have found the zone
