Update docs-parts/definition/11-ERD_lang1.rst
Update docs-parts/definition/11-ERD_lang1.rst

Co-authored-by: Dimitri Yatsenko <24bef948627238e46f7a1a189276781098b74b3c@datajoint.com>
datajoint/datajoint-python,dimitri-yatsenko/datajoint-python