Fix Changelog

Author: Legrandin

Changelog.rst

@@ -11,7 +11,7 @@ New features
 Resolved issues
 ---------------
 * GH#812: CCM ciphers will now fail before encrypting (or decrypting)
-          data beyond the limit imposed by the nonce length.
+  data beyond the limit imposed by the nonce length.
 * GH#846: fix infinite loop with RC4 for data larger than 4GB.
 * GH#852: handle correctly invalid PEM files with less than 3 lines.