#1113 Link uml-reverse-mapper created class diagrams to readme, where needed

collection-pipeline/README.md

@@ -14,6 +14,7 @@ tags:
 Collection Pipeline introduces Function Composition and Collection Pipeline, two functional-style patterns that you can combine to iterate collections in your code. 
 In functional programming, it's common to sequence complex operations through a series of smaller modular functions or operations. The series is called a composition of functions, or a function composition. When a collection of data flows through a function composition, it becomes a collection pipeline. Function Composition and Collection Pipeline are two design patterns frequently used in functional-style programming.
 
+## Class diagram
 ![alt text](./etc/collection-pipeline.png "Collection Pipeline")
 
 ## Applicability