[refactor] rename test name

tests/test_inbox.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 """Test inbox route."""
 
-def test_inbox(client):
+def test_inbox_no_signature_key(client):
     """Test inbox"""
     response = client.post("/inbox",
                            data={"name": "Test"})

tests/test_index.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python3
 """Test App index"""
 
-def test_request_example(client):
+def test_index_page(client):
     """Test index path"""
     response = client.get("/")
     assert b"Hello Fediverse!" in response.data