Update example

AdamZaczek · AdamZaczek · commit b282f1e5c4ca · 2021-05-11T15:32:19.000+02:00
diff --git a/README.md b/README.md
@@ -12,7 +12,7 @@ yarn && yarn init-db && yarn start
 yarn start
 ```
 
-### If you want to access postgres directly
+### If you want to access PostgreSQL directly
 ```bash
 sudo -u postgres psql
 ```
