add covenants info

bitcoin-information/technical-resources.html

@@ -119,6 +119,7 @@ <h2 id="resources"><a href="#resources">Technical Resources:</a></h2>
             <li><a href="https://bitcoinjs-guide.bitcoin-studio.com/" title="BitcoinJS Guide" target="_blank" rel="noopener">BitcoinJS &amp; Bitcoin Core &amp; LND guide</a></li>
             <li><a href="https://github.com/reiver/blockchain-reading-list" title="Reading List" target="_blank" rel="noopener">Blockchain Reading List</a></li>
             <li><a href="https://chat.bitcoinsearch.xyz/" title="Chat BTC" target="_blank" rel="noopener">ChatBTC</a> (technical chat bot)</li>
+            <li><a href="https://covenants.info/" title="Covenants" target="_blank" rel="noopener">Covenants Documentation</a></li>
             <li><a href="http://www.michaelnielsen.org/ddi/how-the-bitcoin-protocol-actually-works/" title="Protocol Explanation" target="_blank" rel="noopener">How the Bitcoin Protocol Actually Works</a></li>
             <li><a href="https://github.com/BlockchainCommons/Learning-Bitcoin-from-the-Command-Line" title="Command Line" target="_blank" rel="noopener">Learning Bitcoin from the Command Line</a></li>
             <li><a href="http://davidederosa.com/basic-blockchain-programming/" title="Basic Programming" target="_blank" rel="noopener">Intro to Bitcoin for Developers</a></li>