Fix IndentationErrors in Adventure-game.py

@aritrochakraborty29 Can you please **add indentation** to **Adventure-game.py** so that our automated tests pass?
* https://github.com/aman-raza/Friends_Hack/actions

$ `flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics`
```python
./Adventure-game.py:12:1: E999 IndentationError: expected an indented block
print("You are in ROOM 1 now.")
^
```