Fix broken links in `Thread` docs.

diff --git a/src/libstd/thread/mod.rs b/src/libstd/thread/mod.rs
index 2ae62f8c3e0ac5412b86faebe604df41a3c1c7a2..c1d9a0c9e6b1f3d1abe7c71b855d5f5c4a372b87 100644 (file)
--- a/src/libstd/thread/mod.rs
+++ b/src/libstd/thread/mod.rs
@@ -896,6 +896,9 @@ struct Inner {
 /// docs of [`Builder`] and [`spawn`] for more details.
 ///
 /// [`Builder`]: ../../std/thread/struct.Builder.html
+/// [`JoinHandle::thread`]: ../../std/thread/struct.JoinHandle.html#method.thread
+/// [`JoinHandle`]: ../../std/thread/struct.JoinHandle.html
+/// [`thread::current`]: ../../std/thread/fn.current.html
 /// [`spawn`]: ../../std/thread/fn.spawn.html
 
 pub struct Thread {