doc: Fix some broken links

src/librustc/middle/ty.rs

@@ -220,10 +220,10 @@ pub enum AutoRef {
     /// Convert from T to &T
     AutoPtr(Region, ast::Mutability),
 
-    /// Convert from ~[]/&[] to &[] (or str)
+    /// Convert from ~[]/&[] to &[] or str
     AutoBorrowVec(Region, ast::Mutability),
 
-    /// Convert from ~[]/&[] to &&[] (or str)
+    /// Convert from ~[]/&[] to &&[] or str
     AutoBorrowVecRef(Region, ast::Mutability),
 
     /// Convert from T to *T

src/libstd/lib.rs

@@ -32,7 +32,7 @@
 //!
 //! ## Pervasive types
 //!
-//! The [`option`](option/index.html) and [`result`](result/index.html)
+//! The [`option`](option/index.html) and [`result`](../core/result/index.html)
 //! modules define optional and error-handling types, `Option` and `Result`.
 //! [`iter`](../core/iter/index.html) defines Rust's iterator protocol
 //! along with a wide variety of iterators.

src/libsyntax/attr.rs

@@ -336,7 +336,7 @@ pub fn test_cfg<AM: AttrMetaMethods, It: Iterator<AM>>
     no_cfgs || some_cfg_matches
 }
 
-/// Represents the #[deprecated="foo"] (etc) attributes.
+/// Represents the #[deprecated="foo"] and friends attributes.
 pub struct Stability {
     pub level: StabilityLevel,
     pub text: Option<InternedString>