Add own 88x31

(and rename icon->img, btw...)

blueprints/root/templates/index.pug

@@ -1,19 +1,19 @@
 extends root/templates/base.pug
 
 block title
-  img.icon(src="/static/icon/lair.webp")
+  img.icon(src="/static/img/lair.webp")
   |  Lair
 
 block content
   a.block(href="https://b.lair.moe" target="_blank")
     .header
-      img.icon(src="/static/icon/service/sharkey.webp")
+      img.icon(src="/static/img/service/sharkey.webp")
       strong Sharkey
     p= _('index.descr:sharkey')
 
   a.block(href="https://g.lair.moe" target="_blank")
     .header
-      img.icon(src="/static/icon/service/gitea.webp")
+      img.icon(src="/static/img/service/gitea.webp")
       strong Gitea
     p= _('index.descr:gitea')