Fix correct interior env names (#38)

src/datasources/interiors-lambda-api.ts

@@ -4,7 +4,7 @@ import { Product, ProductGroup } from '../types/product-types';
 export class InteriorsLambdaAPI extends RESTDataSource {
   constructor() {
     super();
-    this.baseURL = process.env.INTERIOR_URL;
+    this.baseURL = process.env.INTERIORS_URL;
   }
 
   /**
@@ -23,7 +23,7 @@ export class InteriorsLambdaAPI extends RESTDataSource {
     const isRepeating = found !== undefined;
 
     const body = {
-      token: process.env.INTERIOR_TOKEN,
+      token: process.env.INTERIORS_TOKEN,
       image: `products/${product.id}.jpg`,
       primary_image_area: [
         product.fields.focusXpoint2,