Text improvement

closes #47

exercises/103_tokenization.zig

@@ -1,9 +1,9 @@
 //
 // The functionality of the standard library is becoming increasingly
-// important in Zig. On the one hand, it is helpful to look at how
+// important in Zig. First of all, it is helpful to take a look at how
 // the individual functions are implemented. Because this is wonderfully
-// suitable as a template for your own functions. On the other hand,
-// these standard functions are part of the basic equipment of Zig.
+// suitable as a template for your own functions. In addition these
+// standard functions are part of the basic configuration of Zig.
 //
 // This means that they are always available on every system.
 // Therefore it is worthwhile to deal with them also in Ziglings.