Update website

Author: mbloch

index.html

@@ -70,7 +70,7 @@
 		<span class="console-btn header-btn btn">Console</span><span class="display-btn header-btn btn">Display</span><span class="separator"></span><span class="separator"></span></span><span class="simplify-btn header-btn btn">Simplify</span><span class="separator"></span><span class="export-btn header-btn btn">Export</span>
 	</div>
 	<div id="splash-buttons" class="page-header-buttons">
-		<a href="https://github.com/mbloch/mapshaper/wiki"><span id="wiki-btn" class="header-btn btn">Wiki</span></a><span class="separator"></span><a href="https://github.com/mbloch/mapshaper"><span id="github-btn" class="header-btn btn">GitHub</span></a><span class="separator"></span><a href="sponsor.html"><span id="sponsor-btn" class="header-btn btn"><svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg> Sponsor</span></a>
+		<a href="https://github.com/mbloch/mapshaper/wiki"><span id="wiki-btn" class="header-btn btn">Wiki</span></a><span class="separator"></span><a href="https://github.com/mbloch/mapshaper"><span id="github-btn" class="header-btn btn">GitHub</span></a><span class="separator"></span><a href="sponsor.html"><span id="sponsor-btn" class="header-btn btn"><svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 21.35l-1.45-1.32C5.4 15.36 2 12.28 2 8.5 2 5.42 4.42 3 7.5 3c1.74 0 3.41.81 4.5 2.09C13.09 3.81 14.76 3 16.5 3 19.58 3 22 5.42 22 8.5c0 3.78-3.4 6.86-8.55 11.54L12 21.35z"/></svg> Become a sponsor</span></a>
 	</div>
 </div>