Amend and order

Author: smowton

CONTRIBUTING.md

@@ -18,11 +18,11 @@ If you have an idea for a query that you would like to share with other CodeQL u
 
       * C/C++: `cpp/ql/src`
       * C#: `csharp/ql/src`
-      * Java: `java/ql/src`
+      * Go: `go/ql/src`
+      * Java/Kotlin: `java/ql/src`
       * JavaScript: `javascript/ql/src`
       * Python: `python/ql/src`
       * Ruby: `ruby/ql/src`
-      * Go: `go/ql/src`
       * Swift: `swift/ql/src`
 
     Each language-specific directory contains further subdirectories that group queries based on their `@tags` or purpose.