Typos in ray-crash-course

[MSutt]

Hello
I spotted small typos in the ray-crash-course.

00-Ray-Crash-Course-Overview.ipynb

The naming and the link of item 03 are incorrect.

academy/ray-crash-course/00-Ray-Crash-Course-Overview.ipynb

Lines 66 to 70 in cb8938d

	"| 00 | [Overview](00-Ray-Crash-Course-Overview.ipynb) | A _table of contents_ for this tutorial. |\n",
	"| 01 | [Ray Tasks](01-Ray-Tasks.ipynb) | Understanding how Ray converts normal Python functions into distributed _stateless tasks_. |\n",
	"| 02 | [Ray Actors](02-Ray-Actors.ipynb) | Understanding how Ray converts normal Python classes into distributed, _stateful actors_. |\n",
	"| 03 | [Ray Actors](02-Ray-Objects.ipynb) | Understanding Ray's distributed obect store |\n",
	"| 04 | [Exploring Ray API Calls](04-Exploring-Ray-API-Calls.ipynb) | The Ray API has other API calls for more advanced scenarios, which are surveyed in this optional lesson. Keyword arguments you can pass to the API calls already learned are explored. |\n",

I would suggest changing to
"| 03 | [Ray Objects](03-Ray-Objects.ipynb)

01-Ray-Tasks.ipynb

in Example 2: Adding two np arrays section. I assume this should be return np.add(arr1, arr2)

academy/ray-crash-course/01-Ray-Tasks.ipynb

Lines 286 to 287 in cb8938d

	"def add_array(arr1: np.array, arr2: np.array) -> np.array:\n",
	" return np.add(arr1, arr1)"