Update azure/Guidelines.md

Author: JeffreyRichter

azure/Guidelines.md

@@ -757,7 +757,8 @@ The purpose is to inform customers (when debugging/logging responses) that they
 
 :white_check_mark: **DO** add the 'azure-deprecating' header with a string value to all service operations in your service's contract file (cadl/swagger).
 
-:white_check_mark: **DO** include this header in the operation's response _only if_ the operation will stop working in the future and the client _must take_ action in order for it to keep working. NOTE: We do not want to scare customers with this header.
+:white_check_mark: **DO** include this header in the operation's response _only if_ the operation will stop working in the future and the client _must take_ action in order for it to keep working. 
+> NOTE: We do not want to scare customers with this header.
 
 :white_check_mark: **DO** make the header's value a semicolon-delimited string indicating a set of deprecations where each one indicates what is deprecating, when it is deprecating, and a URL to more information.