Fix dead links in chrono-tz readme and reflow

README.md

@@ -1,14 +1,12 @@
 # Chrono-TZ
 
-`Chrono-TZ` is a library that provides implementors of the
-[`TimeZone`][timezone] trait for [`rust-chrono`][chrono]. The
-impls are generated by a build script using the [`IANA database`][iana]
-and [`parse-zoneinfo`][parse_zoneinfo].
+`Chrono-TZ` is a library that provides implementors of the [`TimeZone`] trait for [chrono]. The
+impls are generated by a build script using the [`IANA database`][iana] and [`parse-zoneinfo`].
 
-[chrono]: https://github.com/lifthrasiir/rust-chrono
-[timezone]: https://lifthrasiir.github.io/rust-chrono/chrono/offset/trait.TimeZone.html
+[chrono]: https://crates.io/crates/chrono
+[`TimeZone`]: https://docs.rs/chrono/latest/chrono/trait.TimeZone.html
 [iana]: http://www.iana.org/time-zones
-[parse_zoneinfo]: https://github.com/djzin/parse-zoneinfo
+[`parse-zoneinfo`]: https://crates.io/crates/parse-zoneinfo
 
 ## Documentation