Update Knit to 0.2.3 (#2415)

diff --git a/docs/select-expression.md b/docs/select-expression.md
index 43fcfd2..713f513 100644
--- a/docs/select-expression.md
+++ b/docs/select-expression.md
@@ -537,13 +537,19 @@
 
 <!--- MODULE kotlinx-coroutines-core -->
 <!--- INDEX kotlinx.coroutines -->
+
 [Deferred.onAwait]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines/-deferred/on-await.html
+
 <!--- INDEX kotlinx.coroutines.channels -->
+
 [ReceiveChannel.receive]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-receive-channel/receive.html
 [ReceiveChannel.onReceive]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-receive-channel/on-receive.html
 [onReceiveOrNull]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/on-receive-or-null.html
 [SendChannel.send]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/send.html
 [SendChannel.onSend]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.channels/-send-channel/on-send.html
+
 <!--- INDEX kotlinx.coroutines.selects -->
+
 [select]: https://kotlin.github.io/kotlinx.coroutines/kotlinx-coroutines-core/kotlinx.coroutines.selects/select.html
+
 <!--- END -->