docs: update DeepModeling URLs (#4119)

Update DeepModeling URLs for domain migration.

Generated by the task: njzjz-bot/njzjz-bot#8.


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

## Summary by CodeRabbit

- **Documentation**
- Updated the "Publications" link to ensure users are directed to the
correct resource.
- Revised the URL for the `DP-GUI` tool to provide accurate access for
loading, modifying, and exporting input files.

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

doc/index.rst

@@ -56,7 +56,7 @@ DeePMD-kit is a package written in Python/C++, designed to minimize the effort r
    :caption: Tutorial
 
    Tutorials <https://tutorials.deepmodeling.com/>
-   Publications <https://deepmodeling.com/blog/papers/deepmd-kit/>
+   Publications <https://blogs.deepmodeling.com/papers/deepmd-kit/>
 
 .. _developer-guide:
 

doc/train/train-input.rst

@@ -1,7 +1,7 @@
 Training Parameters
 ======================================
 .. note::
-   One can load, modify, and export the input file by using our effective web-based tool `DP-GUI <https://deepmodeling.com/dpgui/input/deepmd-kit-2.0>`_ online or hosted using the :ref:`command line interface <cli>` :code:`dp gui`. All training parameters below can be set in DP-GUI. By clicking "SAVE JSON", one can download the input file for further training.
+   One can load, modify, and export the input file by using our effective web-based tool `DP-GUI <https://dpgui.deepmodeling.com/input/deepmd-kit-2.0>`_ online or hosted using the :ref:`command line interface <cli>` :code:`dp gui`. All training parameters below can be set in DP-GUI. By clicking "SAVE JSON", one can download the input file for further training.
 
 .. note::
    One can benefit from IntelliSense and validation when