Added link to 0.38.0 docs.

Author: mbrandonw

README.md

@@ -419,12 +419,13 @@ You can add ComposableArchitecture to an Xcode project by adding it as a package
 The documentation for releases and `main` are available here:
 
 * [`main`](https://pointfreeco.github.io/swift-composable-architecture/main/documentation/composablearchitecture)
-* [0.36.0](https://pointfreeco.github.io/swift-composable-architecture/0.36.0/documentation/composablearchitecture)
+* [0.38.0](https://pointfreeco.github.io/swift-composable-architecture/0.38.0/documentation/composablearchitecture/)
 <details>
   <summary>
   Other versions
   </summary>
-
+  * [0.37.0](https://pointfreeco.github.io/swift-composable-architecture/0.37.0/documentation/composablearchitecture)
+  * [0.36.0](https://pointfreeco.github.io/swift-composable-architecture/0.36.0/documentation/composablearchitecture)
   * [0.35.0](https://pointfreeco.github.io/swift-composable-architecture/0.35.0/documentation/composablearchitecture)
   * [0.34.0](https://pointfreeco.github.io/swift-composable-architecture/0.34.0/documentation/composablearchitecture)
   * [0.33.1](https://pointfreeco.github.io/swift-composable-architecture/0.33.1/documentation/composablearchitecture)