Merge pull request #1638 from deeppavlov/docs/tg-logo

docs: tg logo

Author: danielkornev

docs/_static/social/telegram.png

@@ -32,9 +32,10 @@
     {%- block extrafooter %}
         <p>Problem? <a href="https://forum.deeppavlov.ai">Ask a Question</a> or <a href="https://demo.deeppavlov.ai/">try our Demo</a></p>
         <p>
+            <a href="https://medium.com/deeppavlov"><img style="width: 30px; height: 30px;" src="{{ pathto('_static/social/Medium_Monogram.svg', 1) }}" alt="medium"></a>
             <a href="https://twitter.com/deeppavlov"><img style="width: 30px; height: 30px;" src="{{ pathto('_static/social/Twitter_Social_Icon_Circle_Color.svg', 1) }}" alt="twitter"></a>
             <a href="https://www.youtube.com/channel/UCJ-6K2HGA0hpQytlSM7FBVQ"><img style="width: 30px; height: 30px;" src="{{ pathto('_static/social/youtube_social_circle_red.png', 1) }}" alt="youtube"></a>
-            <a href="https://medium.com/deeppavlov"><img style="width: 30px; height: 30px;" src="{{ pathto('_static/social/Medium_Monogram.svg', 1) }}" alt="medium"></a>
+            <a href="https://t.me/deeppavlov"><img style="width: 30px; height: 30px;" src="{{ pathto('_static/social/telegram.png', 1) }}" alt="medium"></a>
         </p>
     {% endblock %}
     <p>