Split Known Amendments to separate page

dactyl-config.yml

@@ -50,6 +50,7 @@ targets:
             "reference-transaction-format.html": https://ripple.com/build/transactions/
             "reference-ledger-format.html": https://ripple.com/build/ledger-format/
             "reference-data-api.html": https://ripple.com/build/data-api-v2/
+            "reference-amendments.html": https://ripple.com/build/known-amendments/
             "tutorial-multisign.html": https://ripple.com/build/how-to-multi-sign/
             "concept-issuing-and-operational-addresses.html": https://ripple.com/build/issuing-operational-addresses/
             "tutorial-reliable-transaction-submission.html": https://ripple.com/build/reliable-transaction-submission/
@@ -173,6 +174,13 @@ pages:
             - local
             - ripple.com
 
+    -   md: reference-amendments.md
+        category: References
+        html: reference-amendments.html
+        targets:
+            - local
+            - ripple.com
+
 # Tutorials are step-by-step guides to a specific goal
     -   name: How to Multi-Sign
         category: Tutorials