Fixed some spelling mistakes
diff --git a/docs/glossary.rst b/docs/glossary.rst
index e4fc828..b6f2d06 100644
--- a/docs/glossary.rst
+++ b/docs/glossary.rst
@@ -27,4 +27,4 @@
 
     asymmetric cryptography
         Cryptographic operations where encryption and decryption use different
-        keys. There are seperate encryption and decryption keys.
+        keys. There are separate encryption and decryption keys.