Update `Russian` translation

Currently translated at 100.0% (573 of 573 strings)

Translation: Wiki-Bot/Discord
Translate-URL: https://translate.wikibot.de/projects/wiki-bot/discord/ru/

i18n/ru.json

@@ -34,9 +34,9 @@
             " "
         ],
         "discussion": [
-            " ",
-            " ",
-            " ",
+            "обсуждения",
+            "обсуждение",
+            "обс",
             " ",
             " "
         ],