Update index.md

Author: WillemOuwerkerk

1209/B126/index.md

@@ -4,7 +4,7 @@ title: noForth t CDC driver
 owner: noForth
 license: MIT
 site: https://home.hccnet.nl/anij/nof/noforth.html
-source: https://github.com/WillemOuwerkerk/noForth-T-hardware-examples-RP2040/blob/main/README.md
+source: https://github.com/WillemOuwerkerk/noForth-T-hardware-examples-RP2040/blob/main/USB/USB-XS-003me.f
 ---
 noForth t compact interactive development system for RP2040
 following the Forth 2012 standards document