chore: add Netlify doc previews (#4699)

netlify.toml

@@ -0,0 +1,16 @@
+[build]
+  command = """
+    rustup install nightly --profile minimal && cargo doc --no-deps --all-features
+    """
+  publish = "target/doc"
+
+[build.environment]
+  RUSTDOCFLAGS="""
+    --cfg docsrs \
+    --cfg tokio_unstable \
+    """
+  RUSTFLAGS="--cfg tokio_unstable --cfg docsrs"
+
+[[redirects]]
+  from = "/"
+  to = "/tokio"

tokio/src/macros/join.rs

@@ -12,7 +12,7 @@
 /// for **all** branches complete regardless if any complete with `Err`. Use
 /// [`try_join!`] to return early when `Err` is encountered.
 ///
-/// [`try_join!`]: macro@try_join
+/// [`try_join!`]: crate::try_join
 ///
 /// # Notes
 ///