update to latest documentation and update copyright year
diff --git a/MagickCore/configure.h b/MagickCore/configure.h
index fbe39bf..523cc75 100644
--- a/MagickCore/configure.h
+++ b/MagickCore/configure.h
@@ -1,5 +1,5 @@
/*
- Copyright 1999-2020 ImageMagick Studio LLC, a non-profit organization
+ Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License. You may
