theme/index: add Manual Pages link.

Author: ericonr

src/theme/index.hbs

@@ -58,6 +58,7 @@
 					<li><a href="https://www.voidlinux.org/download/">Download</a></li>
 					<li><a href="https://www.voidlinux.org/packages/">Packages</a></li>
 					<li><a href="https://docs.voidlinux.org">Documentation</a></li>
+					<li><a href="https://man.voidlinux.org/">Manual Pages</a></li>
 					<li><a href="https://reddit.com/r/voidlinux">Forum</a></li>
 					<li><a href="https://voidlinux.org/contribute/">Join Us</a></li>
 					<li><a href="https://github.com/void-linux">GitHub</a></li>