and again

src/solve/caching.md

@@ -107,6 +107,7 @@ We can implement this optimization in the future.
 [initial-prov-result]: https://github.com/rust-lang/rust/blob/7606c13961ddc1174b70638e934df0439b7dc515/compiler/rustc_trait_selection/src/solve/search_graph.rs#L366-L370
 [fixpoint]: https://github.com/rust-lang/rust/blob/7606c13961ddc1174b70638e934df0439b7dc515/compiler/rustc_trait_selection/src/solve/search_graph.rs#L425-L446
 [^2]: summarizing the relevant [zulip thread]
+
 [zulip thread]: https://rust-lang.zulipchat.com/#narrow/stream/364551-t-types.2Ftrait-system-refactor/topic/global.20cache
 [unstable-result-ex]: https://github.com/rust-lang/rust/blob/7606c13961ddc1174b70638e934df0439b7dc515/tests/ui/traits/next-solver/cycles/coinduction/incompleteness-unstable-result.rs#L4-L16
 [cycle-participants]: https://github.com/rust-lang/rust/blob/7606c13961ddc1174b70638e934df0439b7dc515/compiler/rustc_middle/src/traits/solve/cache.rs#L72-L74