Add sepehr-rs as Persian documentation coordinator

Author: sepehr-rs

documentation/translations/translating.rst

@@ -72,6 +72,7 @@ For more details about translations and their progress, see
      - `original announcement <https://mail.python.org/pipermail/doc-sig/2019-July/004138.html>`__
    * - Persian (fa)
      - Alireza Shabani (:github-user:`revisto`)
+     - Sepehr Rasouli (:github-user:`sepehr-rs`)
      - :github:`GitHub <revisto/python-docs-fa>`
    * - `Polish (pl) <https://docs.python.org/pl/>`__
      - | Maciej Olko (:github-user:`m-aciek`),