Update CHANGELOG.md

typo

Co-authored-by: Copilot <[email protected]>

Author: Alexboiboi

CHANGELOG.md

@@ -11,8 +11,7 @@
   - if susceptibility input is scalar, isotropic susceptibility is assumed, if
     it is a 3-vector it can be anisotropic
 - Various tests included of interface and computation, isotropic and anisotropic
-  tests confirm computaiton
-
+  tests confirm computation
 # 0.2.1a0
 
 - Fix null polarization for rotated objects