documentation link updated to point to site directory

Author: verhas

README.md

@@ -10,4 +10,4 @@ a scripting language that is simple. If you use groovy, scala, clojure as an emb
 still may be a burden on developers of high cost. When this is BASIC even the "once-IT-guy" managers will be able and will dare to
 play with it lowering your support cost and increasing customer satisfaction.
 
-[Documentation](blob/master/site/basic.md)
+[Documentation](site/basic.md)