Обновлена структура документации (#633)

docs/source/index.rst

@@ -3,8 +3,8 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Документация библиотеки
+Документация
-=======================
+============
 
 .. include:: ../../README.md
    :parser: myst_parser.sphinx_
@@ -14,12 +14,31 @@
 
    readme
    token
+   examples
+
+.. toctree::
+   :caption: Библиотека
+   :maxdepth: 2
+
    client
    client_async
-   examples
    module
+
+.. toctree::
+   :hidden:
+   :caption: Разработка
+
    changes
    contributing
    code_of_conduct
    security
    licence
+
+.. toctree::
+   :hidden:
+   :caption: Ссылки проекта
+
+   GitHub <https://github.com/MarshalX/yandex-music-api>
+   PyPI <https://pypi.org/project/yandex-music>
+   Автор <https://github.com/MarshalX>
+   Telegram чат <https://t.me/yandex_music_api>