add link pointing to 'scopes' in dev doc

Author: JFU-NAVA-PBC

README.md

@@ -169,7 +169,7 @@ There are three ways to configure the SDK when instantiating a `BlueButton` clas
 
 Below are code snippets showing the SDK used with Python server and Flask. This code walks through:
 
-- Obtaining an access token with scope ([SMART App Launch: Scopes](https://build.fhir.org/ig/HL7/smart-app-launch/scopes-and-launch-context.html#scopes-for-requesting-fhir-resources)) chosen by a user
+- Obtaining an access token with scope ([Scopes](https://bluebutton.cms.gov/developers/#scopes)) chosen by a user
 - Passing the token to query for FHIR data
 - Using URL links from the response to page through data
 - Using the SDK paging support to return all data in one call