fix typo in calc command documentation
minimumum -> minimum
@@ -15,7 +15,7 @@ functions :
* sinh, cosh, tanh, asinh, acosh, atanh
* floor, ceil, round
* signum
-* max(x, ...), min(x, ...): maximum and minimumum of 1 or more numbers
+* max(x, ...), min(x, ...): maximum and minimum of 1 or more numbers
constants:
* pi
