examples: reorganize

examples/fizz_buzz.v

@@ -1,21 +1,18 @@
 fn main() {
-  mut s := ''
-
-  for n in 1..101 {
-    if n % 3 == 0 {
-      s += 'Fizz'
-    }
-
-    if n % 5 == 0 {
-      s += 'Buzz'
-    }
-
-    if s == '' {
-      println(n)
-    } else {
-      println(s)
-    }
-
-    s = ''
-  }
+	mut s := ''
+	for n in 1 .. 101 {
+		if n % 3 == 0 {
+			s += 'Fizz'
+		}
+		if n % 5 == 0 {
+			s += 'Buzz'
+		}
+		if s == '' {
+			println(n)
+		}
+		else {
+			println(s)
+		}
+		s = ''
+	}
 }