fix the linting errors (#1451)

src/js/core/background_resources_loader.js

@@ -227,7 +227,7 @@ export class BackgroundResourcesLoader {
 
                     const options = {};
                     const headers = xhr.getAllResponseHeaders();
-                    const contentType = headers.match(/^Content-Type\:\s*(.*?)$/im);
+                    const contentType = headers.match(/^Content-Type:\s*(.*?)$/im);
                     if (contentType && contentType[1]) {
                         options.type = contentType[1].split(";")[0];
                     }

src/js/game/map_view.js

@@ -235,6 +235,7 @@ export class MapView extends BaseMap {
             let key = "regular";
 
             // Disabled rn because it can be really annoying
+            // eslint-disable-next-line no-constant-condition
             if (this.root.hud.parts.buildingPlacer.currentMetaBuilding.get() && false) {
                 key = "placing";
             }