Add reference link for copybutton_prompt_text in `docs/source/conf.py`
@@ -159,6 +159,7 @@ napoleon_include_special_with_doc = True
# ipython and qtconsole + continuation (e.g., 'In [29]: ', ' ...: '),
# jupyter-console + continuation (e.g., 'In [29]: ', ' ...: ')
# ]
+# regex taken from https://sphinx-copybutton.readthedocs.io/en/latest/#using-regexp-prompt-identifiers
copybutton_prompt_text = r">>> |\.\.\. |\$ |In \[\d*\]: | {2,5}\.\.\.: | {5,8}: "
copybutton_prompt_is_regexp = True
