make a html link in the doccomments

src/value/mod.rs

@@ -106,7 +106,7 @@ pub use crate::raw::{to_raw_value, RawValue};
 
 /// Represents any valid JSON value.
 ///
-/// See the `serde_json::value` module documentation for usage examples.
+/// See the [`serde_json::value` module documentation](./index.html) for usage examples.
 #[derive(Clone, Eq, PartialEq)]
 pub enum Value {
     /// Represents a JSON null value.