Update links to Rust Reference in diagnostic Instead of linking to the [old Rust Reference site](https://static.rust-lang.org/doc/master/reference.html#literals), which is severely outdated (Rust 1.17), link to the [current website](https://doc.rust-lang.org/stable/reference/expressions/literal-expr.html) in diagnostic about incorrect literals. |
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|---|---|---|
| .. | ||
| lexer | ||
| parser | ||
| errors.rs | ||
| lib.rs | ||
| validate_attr.rs | ||