fixed incorrect language string used in fb button in default motd

src/routes/api.js

@@ -72,7 +72,7 @@ var path = require('path'),
 						if (!meta.config.motd) {
 							// Construct default MOTD
 							translator.mget(['global:motd.welcome', 'global:motd.get', 'global:motd.fork', 'global:motd.like', 'global:motd.follow'], function(err, strings) {
-								motdString = '<div class="pull-right btn-group"><a target="_blank" href="https://www.nodebb.org" class="btn btn-default btn-lg"><i class="fa fa-comment"></i><span class="hidden-mobile">&nbsp;' + strings[1] + '</span></a><a target="_blank" href="https://github.com/designcreateplay/NodeBB" class="btn btn-default btn-lg hidden-mobile"><i class="fa fa-github"></i><span class="hidden-mobile">&nbsp;' + strings[2] + '</span></a><a target="_blank" href="https://facebook.com/NodeBB" class="btn btn-default btn-lg"><i class="fa fa-facebook"></i><span class="hidden-mobile">&nbsp;' + strings[4] + '</span></a><a target="_blank" href="https://twitter.com/NodeBB" class="btn btn-default btn-lg"><i class="fa fa-twitter"></i><span class="hidden-mobile">&nbsp;' + strings[4] + '</span></a></div>\n\n# NodeBB <span>v' + pkg.version + '</span>\n' + strings[0];
+								motdString = '<div class="pull-right btn-group"><a target="_blank" href="https://www.nodebb.org" class="btn btn-default btn-lg"><i class="fa fa-comment"></i><span class="hidden-mobile">&nbsp;' + strings[1] + '</span></a><a target="_blank" href="https://github.com/designcreateplay/NodeBB" class="btn btn-default btn-lg hidden-mobile"><i class="fa fa-github"></i><span class="hidden-mobile">&nbsp;' + strings[2] + '</span></a><a target="_blank" href="https://facebook.com/NodeBB" class="btn btn-default btn-lg"><i class="fa fa-facebook"></i><span class="hidden-mobile">&nbsp;' + strings[3] + '</span></a><a target="_blank" href="https://twitter.com/NodeBB" class="btn btn-default btn-lg"><i class="fa fa-twitter"></i><span class="hidden-mobile">&nbsp;' + strings[4] + '</span></a></div>\n\n# NodeBB <span>v' + pkg.version + '</span>\n' + strings[0];
 							});
 						} else {
 							motdString = meta.config.motd;