flask: minor tweak, avoid double /s in host-meta templates

templates/host-meta.jrd

@@ -2,7 +2,7 @@
   {
     "rel": "lrdd",
     "type": "application/json",
-    "template": "{{ host_uri }}/.well-known/webfinger?resource={uri}"
+    "template": "{{ host_uri }}.well-known/webfinger?resource={uri}"
    }
   ]
 }

templates/host-meta.xrd

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='UTF-8'?>
 <XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0'>
   <Link rel='lrdd' type='application/json'
-        template='{{ host_uri }}/.well-known/webfinger?resource={uri}' />
+        template='{{ host_uri }}.well-known/webfinger?resource={uri}' />
 </XRD>

templates/host-meta.xrds

@@ -4,7 +4,7 @@
     <Type>xri://$xrds*simple</Type>
     <Service>
       <Type>lrdd</Type>
-      <URI>{{ host_uri }}/.well-known/webfinger?resource={uri}</URI>
+      <URI>{{ host_uri }}.well-known/webfinger?resource={uri}</URI>
     </Service>
   </XRD>
 </XRDS>