Update README.md

Author: davidmoten

README.md

@@ -15,7 +15,7 @@ Utilities for use with rxjava:
 * `Transformers.toOperator`
 * `Tranformers.mapWithIndex`
 * [`Transformers.stateMachine`](http://davidmoten.github.io/rxjava-extras/apidocs/com/github/davidmoten/rx/Transformers.html#stateMachine-rx.functions.Func0-rx.functions.Func3-rx.functions.Action2-)
-* `Transformers.orderedMerge`
+* [`Transformers.orderedMerge`](http://davidmoten.github.io/rxjava-extras/apidocs/com/github/davidmoten/rx/Transformers.html#orderedMergeWith-rx.Observable-rx.functions.Func2-)
 * [`Transformers.collectWhile`](http://davidmoten.github.io/rxjava-extras/apidocs/com/github/davidmoten/rx/Transformers.html#collectWhile-rx.functions.Func0-rx.functions.Action2-rx.functions.Func2-)
 * [`Transformers.toListWhile`](http://davidmoten.github.io/rxjava-extras/apidocs/com/github/davidmoten/rx/Transformers.html#toListWhile-rx.functions.Func2-)
 * [`Transformers.toListUntilChanged`](http://davidmoten.github.io/rxjava-extras/apidocs/com/github/davidmoten/rx/Transformers.html#toListUntilChanged--)