fix(cache): building cachekey

src/BuildingRegistry.Projections.LastChangedList/BuildingProjections.cs

@@ -122,7 +122,7 @@ protected override string BuildCacheKey(AcceptType acceptType, string identifier
             var shortenedAcceptType = acceptType.ToString().ToLowerInvariant();
             return acceptType switch
             {
-                AcceptType.JsonLd => $"oslo/building:{{0}}.{shortenedAcceptType}",
+                AcceptType.JsonLd => $"oslo/building:{0}.{shortenedAcceptType}",
                 _ => throw new NotImplementedException($"Cannot build CacheKey for type {typeof(AcceptType)}")
             };
         }