Merge pull request #1638 from mathbunnyru/asalikhov/use_sphinx_book_theme_rc

Use sphinx-book-theme==0.3.0rc1

Author: mathbunnyru

requirements-docs.txt

@@ -3,7 +3,6 @@
 docutils>=0.17
 myst-parser>=0.16.1
 sphinx>=4.4.0
-# TODO(asalikhov): switch to release, when it is available
-# sphinx-book-theme
-git+https://github.com/executablebooks/sphinx-book-theme@910e26be00e74cafbaaaff274de26b95cab1f7a8#egg=sphinx-book-theme
+# TODO(asalikhov): switch to stable release, when it is available
+sphinx-book-theme==0.3.0rc1
 sphinx-copybutton>=0.5.0