Add documentation warning

README.md

@@ -368,6 +368,10 @@ a stream. Additionally, there's a **ToSeq2** function to convert a stream back i
 **ToSeq2** can be a good alternative to **ForEach** when concurrency is not needed. 
 It gives more control and performs all necessary cleanup and draining, even if the loop is terminated early using *break* or *return*.
 
+> Note: Due to a temporary issue, the documentation for these new functions may not be visible on https://pkg.go.dev.
+> In the meantime, you can view the documentation by inspecting the source code or by running
+> `go doc -all github.com/destel/rill` in your project directory.
+
 [Full runnable example](https://pkg.go.dev/github.com/destel/rill#example-ToSeq2)
 
 ```go