Fix: name of read env-variable

Author: nonchris

src/environment.py

@@ -26,4 +26,4 @@ def load_env(key: str, default: str) -> str:
 PREFIX = load_env("PREFIX", "b!")
 VERSION = load_env("VERSION", "unknown")  # version of the bot
 OWNER_NAME = load_env("OWNER_NAME", "unknown")   # owner name with tag e.g. pi#3141
-OWNER_ID = int(load_env("OWNER", "100000000000000000"))  # discord id of the owner
+OWNER_ID = int(load_env("OWNER_ID", "100000000000000000"))  # discord id of the owner