README.md in mail-jdec-1.0.9 vs README.md in mail-jdec-1.0.10

@@ -1,7 +1,7 @@
 # Mail::Jdec
 
-A mail patch for decoding some inproper mails.
+A mail patch for decoding some improper mails.
 
 ## Dependencies
 
 * ruby 2.3+
 * mail 2.7