fix

Author: Dema-koder

src/main/java/org/example/project/service/LeetcodeService.java

@@ -32,7 +32,7 @@ private List<Problem> getProblemsWithTagAndDifficulty(String difficulty, String
         try {
             HttpClient client = HttpClient.newHttpClient();
             HttpRequest request = HttpRequest.newBuilder()
-                    .uri(new URI("http://localhost:3000/problems?tags=" + userTag + "&limit=10000"))
+                    .uri(new URI("http://leetcode:3000/problems?tags=" + userTag + "&limit=10000"))
                     .GET()
                     .build();