Doc transation: updates.

content/blog/python-docs-translation.md

@@ -86,6 +86,8 @@ And a directory for your repo, initialized for example with my Makefile:
       [transifex](https://www.transifex.com/python-doc/public/).
     - Repository: https://github.com/python/python-docs-pt-br/
     - Wiki: http://python.org.br/traducao
+    - Telegram group: https://t.me/pybr_i18n
+    - Blog post: http://rgth.co/blog/python-ptbr-cenario-atual
 
 - pt
 
@@ -141,6 +143,10 @@ And a directory for your repo, initialized for example with my Makefile:
 
     - Repository: https://github.com/alaeddingurel/python-docs-tr
 
+- pl
+
+    - https://mail.python.org/pipermail/doc-sig/2019-April/004106.html
+
 
 
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