README files fixes

README.md

@@ -16,4 +16,4 @@ The worst game engine you've ever seen... ;(
 - [SOIL](https://www.lonesock.net/soil.html)
 
 ## Used resources (models, fonts etc.)
-Links to all sources are in the [/res](https://github.com/mtiapko/dk/res) directory.
+Links to all sources are in the [/res](https://github.com/mtiapko/dk/tree/master/res) directory.

res/font/Proggy/README.md

@@ -1,3 +1,3 @@
 # Proggy Fonts
-Source link: [GitHub](https://github.com/bluescan/proggyfonts/)
-License [MIT](https://github.com/mtiapko/dk/res/font/Proggy/LICENSE)
+Source link: [GitHub](https://github.com/bluescan/proggyfonts/)  
+License [MIT](https://github.com/mtiapko/dk/blob/master/res/font/Proggy/LICENSE)

res/model/castle_fantasy_book/README.md

@@ -1,3 +1,3 @@
 # Medieval Fantasy Book
-Source link: [Sketchfab](https://sketchfab.com/3d-models/medieval-fantasy-book-06d5a80a04fc4c5ab552759e9a97d91a)
+Source link: [Sketchfab](https://sketchfab.com/3d-models/medieval-fantasy-book-06d5a80a04fc4c5ab552759e9a97d91a)  
 License: [CC Attribution](https://creativecommons.org/licenses/by/4.0/)