mit.txt in licensee-9.13.1

- old
+ new

@@ -8,10 +8,10 @@
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
 using:
   - Babel: https://github.com/babel/babel/blob/master/LICENSE
-  - .NET Core: https://github.com/dotnet/corefx/blob/master/LICENSE.TXT
+  - .NET Core: https://github.com/dotnet/runtime/blob/master/LICENSE.TXT
   - Rails: https://github.com/rails/rails/blob/master/MIT-LICENSE
 
 permissions:
   - commercial-use
   - modifications