docs: switch to sphinx_book_theme (#2295)

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

## Summary by CodeRabbit

- **New Features**
- Updated documentation theme to enhance visual appeal with the new
"sphinx_book_theme."
	- Enabled DeepModeling features for improved functionality.

- **Bug Fixes**
	- Resolved inconsistencies in documentation theme dependencies.

- **Documentation**
- Updated configuration to reflect changes in theme and feature
settings.

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

Author: njzjz

docs/conf.py

@@ -60,7 +60,7 @@
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = "pydata_sphinx_theme"
+html_theme = "sphinx_book_theme"
 html_logo = "_static/reacnetgen.svg"
 html_static_path = ["_static"]
 html_js_files = ["https://unpkg.com/bilitube@0/dist/bilitube.min.js"]
@@ -107,7 +107,7 @@
     },
 ]
 
-enable_deepmodeling = False
+enable_deepmodeling = True
 
 myst_enable_extensions = [
     "dollarmath",

pyproject.toml

@@ -84,7 +84,7 @@ test = [
 ]
 docs = [
     'sphinx',
-    'pydata-sphinx-theme',
+    'sphinx-book-theme',
     'numpydoc',
     'sphinx-argparse<0.5.0',
     'myst-nb>=1.0.0rc0',