Update license field following SPDX 2.1 license expression standard

Signed-off-by: Andrea Frigido <andrea@frisoft.it>
Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 9ef24bc..d04c287 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -8,7 +8,7 @@ readme = "README.md"
 keywords = ["config", "configuration", "settings", "env", "environment"]
 authors = ["Ryan Leckey <leckey.ryan@gmail.com>"]
 categories = ["config"]
-license = "MIT/Apache-2.0"
+license = "MIT OR Apache-2.0"
 edition = "2018"
 
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