Merge pull request #85 from Sentinelrv/patch-7

Update learn-articles.html

learn-articles.html

@@ -1,8 +1,8 @@
 document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/\" class=\"submenu\">Peercoin University</a></li>\n' );
 document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/2-what-is-a-blockchain-\" class=\"submenu\">What is a Blockchain?</a></li>\n' );
-document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/6-centralization-of-bitcoin\" class=\"submenu\">Centralization of Bitcoin</a></li>\n' );
+document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/6-centralization-of-bitcoin\" class=\"submenu\">Inherent Centralization of Proof-of-Work Blockchains</a></li>\n' );
 document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/9-peercoin-proof-of-stake-consensus\" class=\"submenu\">Peercoin & Proof-of-Stake Consensus</a></li>\n' );
-document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/10-first-efficient-sustainable-blockchain\" class=\"submenu\">First Efficient & Sustainable Blockchain</a></li>\n' );
+document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/10-first-efficient-sustainable-blockchain\" class=\"submenu\">Efficient & Sustainable Security</a></li>\n' );
 document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/11-economics-of-peercoin\" class=\"submenu\">Economics of Peercoin</a></li>\n' );
 document.write( '<li><a href=\"https://peercoin.github.io/PeercoinUniversity/#/12-scalability-of-peercoin-\" class=\"submenu\">Scalability of Peercoin</a></li>\n' );
 document.write( '<li><a href=\"https://medium.com/peercoin/deflation-and-cryptocurrencies-the-long-term-ramifications-of-fixed-supply-currencies-c192f44dddc1\" class=\"submenu\">Deflation and Cryptocurrencies</a></li>\n' );