Fix the PR references in the README

README.md

@@ -113,8 +113,8 @@ RON is not designed to be a fully self-describing format (unlike JSON) and is th
 
 While data structures with any of these attributes should roundtrip through RON, their textual representation may not always match your expectation. For instance, flattened structs are only serialised as maps and deserialised from maps.
 
-[^serde-enum-hack]: Deserialising an internally, adjacently, or un-tagged enum requires detecting `serde`'s internal `serde::__private::de::content::Content` content type so that RON can describe the deserialised data structure in serde's internal JSON-like format. This detection only works for the automatically-derived [`Deserialize`](https://docs.rs/serde/latest/serde/de/trait.Deserialize.html) impls on enums. See https://github.com/ron-rs/ron/pull/451 for more details.
-[^serde-flatten-hack]: Deserialising a flattened struct from a map requires that the struct's [`Visitor::expecting`](https://docs.rs/serde/latest/serde/de/trait.Visitor.html#tymethod.expecting) implementation formats a string starting with `"struct "`. This is the case for automatically-derived [`Deserialize`](https://docs.rs/serde/latest/serde/de/trait.Deserialize.html) impls on structs. See https://github.com/ron-rs/ron/pull/455 for more details.
+[^serde-enum-hack]: Deserialising an internally, adjacently, or un-tagged enum requires detecting `serde`'s internal `serde::__private::de::content::Content` content type so that RON can describe the deserialised data structure in serde's internal JSON-like format. This detection only works for the automatically-derived [`Deserialize`](https://docs.rs/serde/latest/serde/de/trait.Deserialize.html) impls on enums. See [#451](https://github.com/ron-rs/ron/pull/451) for more details.
+[^serde-flatten-hack]: Deserialising a flattened struct from a map requires that the struct's [`Visitor::expecting`](https://docs.rs/serde/latest/serde/de/trait.Visitor.html#tymethod.expecting) implementation formats a string starting with `"struct "`. This is the case for automatically-derived [`Deserialize`](https://docs.rs/serde/latest/serde/de/trait.Deserialize.html) impls on structs. See [#455](https://github.com/ron-rs/ron/pull/455) for more details.
 
 ## RON syntax overview