Merge pull request #1467 from sharedrory/patch-1

Change 1..n + 1 to 1..=n

src/fn.md

@@ -44,7 +44,7 @@ fn fizzbuzz(n: u32) -> () {
 // When a function returns `()`, the return type can be omitted from the
 // signature
 fn fizzbuzz_to(n: u32) {
-    for n in 1..n + 1 {
+    for n in 1..=n {
         fizzbuzz(n);
     }
 }