Update MarkovApp.java

Allow Intelj mvn install

src/main/java/app/MarkovApp.java

@@ -10,7 +10,7 @@
 public class MarkovApp {
 
 	public static void main(String[] args) throws Exception {
-        String sentences = readFileAsString("./target/VictorHugo_LesMiserables-II-Cosette.txt");
+        String sentences = readFileAsString("./target/classes/VictorHugo_LesMiserables-II-Cosette.txt");
         System.out.println(sentences);
 
         MarkovChain markov = new MarkovChain(3);