fix: Address code review feedback - improve type safety

- Fixed raw type usage in CheckTest to use proper generics (List<?>)
- Note: isValideUrl typo exists in source code, not in tests

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: graycreate

app/src/test/java/me/ghui/v2er/util/CheckTest.java

@@ -53,7 +53,7 @@ public void testNotEmpty_withNoArguments() {
 
     @Test
     public void testIsEmpty_withNullList() {
-        assertTrue(Check.isEmpty((List) null));
+        assertTrue(Check.isEmpty((List<?>) null));
     }
 
     @Test
@@ -68,7 +68,7 @@ public void testIsEmpty_withNonEmptyList() {
 
     @Test
     public void testNotEmpty_withNullList() {
-        assertFalse(Check.notEmpty((List) null));
+        assertFalse(Check.notEmpty((List<?>) null));
     }
 
     @Test