Small fix to the documentation

Models/ThemeConfig/Conversion/PrepareTheme.ts

@@ -456,7 +456,7 @@ export class PrepareTheme extends Fuse<LayoutConfigJson> {
         super(
             "Fully prepares and expands a theme",
             new PreparePersonalTheme(state),
-            // new WarnForUnsubstitutedLayersInTheme(),
+            new WarnForUnsubstitutedLayersInTheme(),
             new OnEveryConcat("layers", new SubstituteLayer(state)),
             new SetDefault("socialImage", "assets/SocialImage.png", true),
             // We expand all tagrenderings first...

Models/ThemeConfig/LayerConfig.ts

@@ -438,7 +438,8 @@ export default class LayerConfig extends WithContextLoader {
             new List(extraProps),
             ...usingLayer,
 
-            new Link("Go to the source code", `../assets/layers/${this.id}/${this.id}.json`),
+            new Link("Go to the source code", 
+                `https://github.com/pietervdvn/MapComplete/blob/develop/assets/layers/${this.id}/${this.id}.json`),
 
             new Title("Basic tags for this layer", 2),
             "Elements must have the all of following tags to be shown on this layer:",