fixup! More style fixes for the curve448 code

Reviewed-by: NBernd Edlinger <bernd.edlinger@hotmail.de>
(Merged from https://github.com/openssl/openssl/pull/5105)

crypto/ec/curve448/point_448.h

@@ -152,7 +152,7 @@ void curve448_scalar_mul(curve448_scalar_t out,
 void curve448_scalar_halve(curve448_scalar_t out, const curve448_scalar_t a);
 
 /*
- * Copy a scalar.  The scalars may use the same memory, in which case this
+ * Copy a scalar.  The scalars may alias each other, in which case this
  * function does nothing.
  * 
  * a (in): A scalar.