style: enable W rules (#3793)

Fix #3789.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Documentation**
- Corrected a minor formatting issue in the quick start guide for
displaying a file path.

- **Chores**
  - Added a new linting rule for warnings to improve code quality.

- **Tests**
- Improved regular expression handling in test cases by using raw string
notation.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Signed-off-by: Jinzhe Zeng <[email protected]>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

doc/getting-started/quick_start.ipynb

@@ -396,7 +396,7 @@
     }
    ],
    "source": [
-    "! cat DeePMD-kit_Tutorial/00.data/training_data/type.raw "
+    "! cat DeePMD-kit_Tutorial/00.data/training_data/type.raw"
    ]
   },
   {

pyproject.toml

@@ -298,6 +298,7 @@ docstring-code-format = true
 [tool.ruff.lint]
 select = [
     "E", # errors
+    "W", # warning
     "F", # pyflakes
     "D", # pydocstyle
     "UP", # pyupgrade

source/tests/pt/model/test_fitting_net.py

@@ -113,7 +113,7 @@ def test_consistency(self):
         ).to(env.DEVICE)
         for name, param in my_fn.named_parameters():
             matched = re.match(
-                "filter_layers\.networks\.(\d).layers\.(\d)\.([a-z]+)", name
+                r"filter_layers\.networks\.(\d).layers\.(\d)\.([a-z]+)", name
             )
             key = None
             if matched: