Revert "remove shell"

This reverts commit 65914f8895.

content/posts/postgres-drop-db.md

@@ -6,29 +6,29 @@ tags: [linux, postgres]
 ---
 ## На старой версии (<=12)
 Заходим в консоль Postgres:
-```
+```shell
 psql
 ```
 
 Убиваем соединения с БД:
-```
+```shell
 SELECT	pg_terminate_backend (pid)
 FROM	pg_stat_activity
 WHERE	pg_stat_activity.datname = '<database_name>';
 ```
 
 Дропаем БД:
-```
+```shell
 DROP DATABASE <database_name>;
 ```
 
 ## На новой версии (>=13)
 Заходим в консоль Postgres:
-```
+```shell
 psql
 ```
 
 Дропаем БД:
-```
+``` shell
 DROP DATABASE <database_name> WITH (FORCE);
 ```