Add README reference to the outlier service

README.rst

@@ -13,6 +13,8 @@ Currently supports 3 services:
    dtf:example
    dtf:conversion
 
+The outlier service relies on `another endpoint <https://msdl.uantwerpen.be/git/lucasalbertins/DTDesign/src/main/tools/typeOperations>`_ which needs to be set up and accessible.
+
 Installation
 ------------