Fixed bug in the example of using apt-key

Original error: $ sudo apt-key adv --keyserver keyserver.ubuntu.com --recv E0C56BD4 Executing: /tmp/apt-key-gpghome.g8OJxK1FMy/gpg.1.sh --keyserver keyserver.ubuntu.com --recv E0C56BD4 gpg: keyserver receive failed: Server indicated a failure
housepower · Mar 14, 2019 · 6b77baa · 6b77baa
1 parent bdc7614
commit 6b77baa
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/docs/ru/getting_started/index.md b/docs/ru/getting_started/index.md
@@ -28,7 +28,7 @@ deb http://repo.yandex.ru/clickhouse/deb/stable/ main/
 
 ```bash
 sudo apt-get install dirmngr    # optional
-sudo apt-key adv --keyserver keyserver.ubuntu.com --recv E0C56BD4    # optional
+sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv E0C56BD4    # optional
 sudo apt-get update
 sudo apt-get install clickhouse-client clickhouse-server
 ```