py: Shorten error messages by using contractions and some rewording.
diff --git a/py/modmath.c b/py/modmath.c
index 7eda759..6072c78 100644
--- a/py/modmath.c
+++ b/py/modmath.c
@@ -187,7 +187,7 @@
         if (base <= (mp_float_t)0.0) {
             math_error();
         } else if (base == (mp_float_t)1.0) {
-            mp_raise_msg(&mp_type_ZeroDivisionError, "division by zero");
+            mp_raise_msg(&mp_type_ZeroDivisionError, "divide by zero");
         }
         return mp_obj_new_float(l / MICROPY_FLOAT_C_FUN(log)(base));
     }