Update IDEAS.md

Author: heptaflar

IDEAS.md

@@ -1,7 +1,7 @@
 # Framing: metrology and uncertainty
 
 Future satellite missions such as ESA [TRUTHS](https://www.esa.int/Applications/Observing_the_Earth/TRUTHS)
-and NASA [CLARREO Pathfinder](https://science.nasa.gov/mission/clarreo-pathfinder/)
+and NASA [CPF](https://science.nasa.gov/mission/clarreo-pathfinder/)
 will, for the first time, allow radiometric calibration that is
 traceable to SI metrological standards. This raises a fundamental
 question for any remote‑sensing activity: if the measurements reach