Merge pull request #29 from nuttycom/test_readme_changes

Fix broken link in README

Author: nuttycom

README.template

@@ -51,7 +51,7 @@ The following ZIPs are under consideration for inclusion in NU7:
 - `ZIP 226: Transfer and Burn of Zcash Shielded Assets <zip-0226.rst>`__
 - `ZIP 227: Issuance of Zcash Shielded Assets <zip-0227.rst>`__
 - `ZIP 230: Version 6 Transaction Format <zip-0230.rst>`__
-- `ZIP 231: Memo Bundles <zip-0231.rst>`__
+- `ZIP 231: Memo Bundles <zip-0231.md>`__
 - `ZIP 233: Network Sustainability Mechanism: Burning <zip-0233.rst>`__
 - `ZIP 234: Network Sustainability Mechanism: Issuance Smoothing <zip-0234.rst>`__
 - `ZIP 235: Network Sustainability Mechanism: Burn 60% of Transaction Fees <zip-0235.rst>`__