Fix sato pow comment (#2807)

diff --git a/src/sampletransform.c b/src/sampletransform.c
index eaf6da5..9113be6 100644
--- a/src/sampletransform.c
+++ b/src/sampletransform.c
@@ -254,7 +254,7 @@
                 return (rightOperand % 2 == 0) ? 1 : -1;
             }
             if (rightOperand < 0) {
-                // L^R is in ]0:1[ here, so truncating it always gives 0.
+                // L^R is in ]-1:1[ here, so truncating it always gives 0.
                 return 0;
             }
             int64_t result = leftOperand;