missing punctuation

Author: davidszotten

src/doc/trpl/error-handling.md

@@ -1470,7 +1470,7 @@ representation. But certainly, this will vary depending on use cases.
 At a minimum, you should probably implement the
 [`Error`](../std/error/trait.Error.html)
 trait. This will give users of your library some minimum flexibility for
-[composing errors](#the-real-try-macro). Implementing the `Error` trait also
+[composing errors](#the-real-try!-macro). Implementing the `Error` trait also
 means that users are guaranteed the ability to obtain a string representation
 of an error (because it requires impls for both `fmt::Debug` and
 `fmt::Display`).