Fix 3.13 Transifex project URL

Author: rffontenelle

README.rst

@@ -49,7 +49,7 @@ Maintained versions:
           :target: https://github.com/python/python-docs-pt-br/actions?workflow=python-313
      - .. image:: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgithub.com%2Fpython%2Fpython-docs-pt-br%2Fraw%2F3.13%2Fstats.json&query=completion&label=pt_BR
           :alt: Brazilian Portuguese translation status for Python 3.13
-          :target: https://app.transifex.com/python-doc/python-newest/
+          :target: https://app.transifex.com/python-doc/python-313/
      - .. image:: https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgithub.com%2Fpython%2Fpython-docs-pt-br%2Fraw%2F3.13%2Fstats.json&query=entries&label=3.13
           :alt: Total strings for Python 3.13
           :target: https://app.transifex.com/python-doc/python-313/