CHANGELOG: typo

CHANGELOG.md

@@ -14,8 +14,8 @@ Changes in and extensions of the theory:
 Changes in Coq:
 
 * Rename `timelessP` -> `timeless` (projection of the `Timeless` class)
-* The CMRA axiom `cmra_extend` is now stated in `Type`, using `sigT` instead
-  of in `Prop` using `exists`. This makes it possible to define the functionnal
+* The CMRA axiom `cmra_extend` is now stated in `Type`, using `sigT` instead of
+  in `Prop` using `exists`. This makes it possible to define the function space
   CMRA even for an infinite domain.
 
 ## Iris 3.1.0 (released 2017-12-19)