fix: Fix middleware regex string to properly match with page param

Resolves #25 (closed)

core/src/main/java/org/eclipsefoundation/core/service/impl/DefaultAPIMiddleware.java

@@ -48,7 +48,7 @@ import io.quarkus.arc.Unremovable;
 @Unremovable
 public class DefaultAPIMiddleware implements APIMiddleware {
     public static final Logger LOGGER = LoggerFactory.getLogger(DefaultAPIMiddleware.class);
-    private static final Pattern PAGE_QUERY_STRING_PARAM_MATCHER = Pattern.compile(".*[\\?&]?page=(\\d+).*");
+    private static final Pattern PAGE_QUERY_STRING_PARAM_MATCHER = Pattern.compile(".*[\\?&]page=(\\d+).*");
 
     @Inject
     ObjectMapper objectMapper;