Adding MK locale to TRANSLATING.md

Author: krisfremen

TRANSLATING.md

@@ -38,6 +38,7 @@ Indonesian | [progit/progit2-id](https://github.com/progit/progit2-id)
 Italiano   | [progit/progit2-it](https://github.com/progit/progit2-it)
 日本語   | [progit/progit2-ja](https://github.com/progit/progit2-ja)
 한국어   | [progit/progit2-ko](https://github.com/progit/progit2-ko)
+Македонски | [progit2-mk/progit2-mk](https://github.com/progit2-mk/progit2)
 Bahasa Melayu| [progit2-ms/progit2](https://github.com/progit2-ms/progit2)
 Nederlands | [progit/progit2-nl](https://github.com/progit/progit2-nl)
 Polski | [progit2-pl/progit2-pl](https://github.com/progit2-pl/progit2-pl)