fix absolute links with relative ones

docs/_assets/_snippets/dgc-platform-comprises.md

@@ -1,7 +1,7 @@
-1. [The Digital Growth Charts API Server](/products/api-server/), which receives growth measurements and returns growth calculations.
+1. [The Digital Growth Charts API Server](../../products/api-server.md), which receives growth measurements and returns growth calculations.
 
-1. [The React.js chart component](/products/react-component/), which takes the returned growth calculation information and displays as a HTML-based visual growth chart which clinicians would recognise and be able to safely interpret and use for the clinical care of their patient.
+1. [The React.js chart component](../../products/react-component.md), which takes the returned growth calculation information and displays as a HTML-based visual growth chart which clinicians would recognise and be able to safely interpret and use for the clinical care of their patient.
 
-1. [The RCPCH Growth Python Library](/products/python-library/), which provides the calculation functionality within the API Server.
+1. [The RCPCH Growth Python Library](../../products/python-library.md), which provides the calculation functionality within the API Server.
 
-1. Comprehensive [Documentation](/) for the RCPCH Digital Growth Charts Platform.
+1. Comprehensive [Documentation](../../index.md) for the RCPCH Digital Growth Charts Platform.