chore: Fix a comment in pngrtran.c
diff --git a/pngrtran.c b/pngrtran.c
index 1647474..74cca47 100644
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -297,14 +297,13 @@
output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
- /* Validate the value to ensure it is in a reasonable range. The value
+ /* Validate the value to ensure it is in a reasonable range. The value
* is expected to be 1 or greater, but this range test allows for some
- * viewing correction values. The intent is to weed out users of this API
- * who use the inverse of the gamma value accidentally! Since some of these
- * values are reasonable this may have to be changed:
+ * viewing correction values. The intent is to weed out the API users
+ * who might use the inverse of the gamma value accidentally!
*
- * 1.6.x: changed from 0.07..3 to 0.01..100 (to accommodate the optimal 16-bit
- * gamma of 36, and its reciprocal.)
+ * In libpng 1.6.x, we changed from 0.07..3 to 0.01..100, to accommodate
+ * the optimal 16-bit gamma of 36 and its reciprocal.
*/
if (output_gamma < 1000 || output_gamma > 10000000)
png_error(png_ptr, "output gamma out of expected range");
