Removed spaces from top-level directory names.

Spaces tend to cause annoyances in a Unix-style shell environment.
This change fixes that.

24_Chemist/java/src/ChemistGame.java

@@ -0,0 +1,6 @@
+public class ChemistGame {
+    public static void main(String[] args) {
+        Chemist chemist = new Chemist();
+        chemist.play();
+    }
+}