Align code example documentation (#52)
diff --git a/errors.go b/errors.go
index 817b936..65bf7a0 100644
--- a/errors.go
+++ b/errors.go
@@ -2,9 +2,9 @@
//
// The traditional error handling idiom in Go is roughly akin to
//
-// if err != nil {
-// return err
-// }
+// if err != nil {
+// return err
+// }
//
// which applied recursively up the call stack results in error reports
// without context or debugging information. The errors package allows
@@ -16,10 +16,10 @@
// The errors.Wrap function returns a new error that adds context to the
// original error. For example
//
-// _, err := ioutil.ReadAll(r)
-// if err != nil {
-// return errors.Wrap(err, "read failed")
-// }
+// _, err := ioutil.ReadAll(r)
+// if err != nil {
+// return errors.Wrap(err, "read failed")
+// }
//
// Retrieving the cause of an error
//