Merge pull request rust-lang#621 from nasso/patch-1

Remove extra parenthesis

Author: ehuss

src/attributes/limits.md

@@ -42,15 +42,19 @@ to set the limit based on the number of type substitutions.
 
 > Note: The default in `rustc` is 1048576.
 
-```rust,compile_fail
+<!-- This code should fail to compile. Unfortunately rustdoc's `compile_fail`
+     stops after analysis phase, and this error is generated after that. So
+     this needs to be `ignore` for now. -->
+
+```rust,compile_fail,ignore
 #![type_length_limit = "8"]
 
 fn f<T>(x: T) {}
 
 // This fails to compile because monomorphizing to
 // `f::<(i32, i32, i32, i32, i32, i32, i32, i32, i32)>>` requires more
 // than 8 type elements.
-f(((1, 2, 3, 4, 5, 6, 7, 8, 9));
+f((1, 2, 3, 4, 5, 6, 7, 8, 9));
 ```
 
 [_MetaNameValueStr_]: attributes.html#meta-item-attribute-syntax