Document Redirect sensitive prop. (#6676)

Author: StringEpsilon

packages/react-router/docs/api/Redirect.md

@@ -74,3 +74,7 @@ Match `from` exactly; equivalent to [Route.exact](./Route.md#exact-bool).
 ## strict: bool
 
 Match `from` strictly; equivalent to [Route.strict](./Route.md#strict-bool).
+
+## sensitive: bool
+
+Match `from` case sensitive; equivalent to [Route.sensitive](./Route.md#sensitive-bool).