Merge pull request #8 from unbracketed/patch-1

Fixes typo of array variable name

examples/arrays/arrays.go

@@ -7,7 +7,7 @@ import "fmt"
 
 func main() {
 
-    // Here we create an array `x` that will hold exactly
+    // Here we create an array `a` that will hold exactly
     // 5 `int`s. The type of elements and length are both
     // part of the array's type. By default an array is
     // zero-valued, which for `int`s means `0`s.