fix: typo in url

src/posts/posts.controller.ts

@@ -53,7 +53,7 @@ export class PostsController {
           }
           // Handle image display. Rewrite image URL to fit ghost infra issue.
           if (post.feature_image && !this.configService.isLocalConf()) {
-            post.feature_image = `https:// + ${this.configService.config.host}/blog/content${
+            post.feature_image = `https://${this.configService.config.host}/blog/content${
               post.feature_image.split('/content')[1]
             }`;
           }