add hidden service mirror link

_config.yml

@@ -2,7 +2,7 @@ title: fef's blog
 description: Shitposts about tech, anime, and the Big Sad.
 baseurl: "/"
 url: "https://fef.moe"
-source_url: "https://git.fef.moe/fef/blog"
+hs_url: "http://pv3gsakv2vlbknfnet7nkn532zzejowdxwrxajnrtasadwnitsgpawyd.onion"
 author:
   name: fef
   email: owo@fef.moe

_layouts/default.html

@@ -47,6 +47,9 @@
 							@{{ site.author.fedi.user }}@{{ site.author.fedi.host }}
 						</a>
 					</li>
+					{% if site.hs_url %}
+						<li><a href="{{ site.hs_url }}">Hidden Service mirror</a></li>
+					{% endif %}
 					<li><a href="/pgp.txt">PGP key</a></li>
 				</ul>
 			</div>