Refresh refdocs stamp for the feb143e3 amy pin

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: bwhitman

tulip/server/refdocs/amy/_VENDORED_FROM.txt

@@ -1,3 +1,3 @@
 Auto-generated by tulip/server/sync_amy_docs.py — do not edit by hand.
-Source: amy@2df15668008ae6719cf636abffe31bf26f16c379
+Source: amy@feb143e311de3aea06e52a65504cca1fcf9d39c6
 Files: api.md, arduino.md, billie_jean.md, godot.md, juno_patches.md, midi.md, synth.md, upgrading.md