Task
📝 **Task:** `count_vowels(text)` counts English vowels (a, e, i, o, u).
📋 **Steps:**
1. `def count_vowels(text):`
2. `count = 0`
3. For each char in `text`: if it's a vowel, `count += 1`
4. Return `count`
💡 **Similar example (count digits):**
```python
def count_digits(text):
return sum(1 for ch in text if ch in "0123456789")
print(count_digits("abc123def45")) # 5
```
🎯 **Expected output:** `2`