doc: fix broken links in book

Author: Jefffrey

book/src/proptest/tutorial/enums.md

@@ -5,7 +5,8 @@ limited. Creating such strategies with `prop_compose!` is possible but
 generally is not very readable, so in most cases defining the function by
 hand is preferable.
 
-The core building block is the [`prop_oneof!`](macro.prop_oneof.html)
+The core building block is the
+[`prop_oneof!`](https://docs.rs/proptest/latest/proptest/macro.prop_oneof.html)
 macro, in which you list one case for each case in your `enum`. For `enum`s
 which have no data, the strategy for each case is
 `Just(YourEnum::TheCase)`. Enum cases with data generally require putting

book/src/proptest/tutorial/test-runner.md

@@ -1,11 +1,10 @@
 # Using the Test Runner
 
 Rather than manually shrinking, proptest's
-[`TestRunner`](test_runner/struct.TestRunner.html) provides this
-functionality for us and additionally handles things like panics. The
-method we're interested in is `run`. We simply
-give it the strategy and a function to test inputs and it takes care of the
-rest.
+[`TestRunner`](https://docs.rs/proptest/latest/proptest/test_runner/struct.TestRunner.html)
+provides this functionality for us and additionally handles things like panics.
+The method we're interested in is `run`. We simply give it the strategy and a
+function to test inputs and it takes care of the rest.
 
 ```rust
 # extern crate proptest;