Correct some typos (DataTalksClub#102)

* Correct a typo

Changed np.arrange() to np.arange()

* Correct few more typos

course-zoomcamp/02-regression/04-validation-framework.md

@@ -18,8 +18,8 @@ In general, the dataset is split into three parts: training, validation, and tes
 
 **Numpy methods:**
 
-* `np.arrange()` - retruns an array of numbers 
-* `np.random.shuffle()` - retturns a suffled array
+* `np.arange()` - returns an array of numbers 
+* `np.random.shuffle()` - returns a shuffled array
 * `np.random.seed()` - set a seed 
 
 The entire code of this project is available in [this jupyter notebook](https://github.com/alexeygrigorev/mlbookcamp-code/blob/master/chapter-02-car-price/02-carprice.ipynb).