🔧 Update .env.example and configuration documentation with additional environment variables

Author: bybatkhuu

.env.example

@@ -1,2 +1,4 @@
 # ENV=LOCAL
 # DEBUG=false
+# TZ=UTC
+# PYTHONDONTWRITEBYTECODE=0

README.md

@@ -221,8 +221,10 @@ my_module01:
 [**`.env.example`**](https://github.com/bybatkhuu/module.python-template/blob/main/.env.example):
 
 ```sh
-# ENV=development
-# DEBUG=true
+# ENV=LOCAL
+# DEBUG=false
+# TZ=UTC
+# PYTHONDONTWRITEBYTECODE=0
 ```
 
 ---

docs/getting-started/configuration.md

@@ -20,6 +20,8 @@ my_module01:
 [**`.env.example`**](https://github.com/bybatkhuu/module.python-template/blob/main/.env.example):
 
 ```sh
-# ENV=development
-# DEBUG=true
+# ENV=LOCAL
+# DEBUG=false
+# TZ=UTC
+# PYTHONDONTWRITEBYTECODE=0
 ```