feat: add concerts to all feed

src/data/concerts.js

@@ -62,7 +62,7 @@ const processConcerts = (concerts) => {
       mbid: concert['artist_mbid'],
       country: parseCountryField(concert['artist_country'])
     } : null,
-    url: `/concerts/${concert['id']}`,
+    url: `/music/concerts?id=${concert['id']}`,
     artistUrl: concert['artist'] ? `/music/artists/${sanitizeMediaString(concert['artist_name'])}-${sanitizeMediaString(parseCountryField(concert['artist_country']))}` : null
   })).sort((a, b) => new Date(b['date']) - new Date(a['date']))
 }

src/pages/dynamic/music/artists/artist.html

@@ -64,7 +64,7 @@ schema: artist
   {%- endif -%}
   {%- if artist.concerts -%}
     <hr />
-    <p class="concerts flex-centered">
+    <p id="concerts" class="concerts flex-centered">
       {% tablericon "device-speaker" "concert" %}
       I've seen this artist live!
     </p>