Update Changelog.md

Changelog.md

@@ -5,6 +5,7 @@ All notable changes to this project will be documented in this file.
 ## [0.75] - 2021-09-30
 - POL1-463: add per-host multicast subscription config
 - POL1-432: added physical circuits to 'backbone' dashboard
+- DBOARD3-462: added endpoint for TNMS node pair classification
 
 ## [0.74] - 2021-08-31
 - corrected cache key from Inventory refresh