Updated the readme and script for generating new excercises

Author: razorblade23

exercises/foundations/01_hello_world/README.md

@@ -7,13 +7,14 @@ In this directory you'll find 2 other files:
 1. `hello_world.py`
 2. `test_hello_world.py`
 
-Run the test from the root directory (python-exercises):
+Run the test from the root directory (`python-exercises`):
 **Note:** try `python3` if the command fails
 
 ```bash
 python check.py 01
 ```
-or
+
+Full path syntax is also supported (with TAB completions working)
 ```bash
 python check.py foundations/01_hello_world
 ```

exercises/foundations/02_datatypes/README.md

@@ -14,5 +14,11 @@ You need to define the following variables:
 
 You need to make sure the variables are named **exactly** like written here, otherwise the tests will fail, values can be anything you want.
 
+### Run the tests
+To run the tests, run the following command in the directory root (`python-excercises`):
+```bash
+python check.py 02
+```
+
 ## Notes
 To finish this excercise, visit our first lesson in TPL - [Datatypes](https://thepythonledger.github.io/Docusaurus-engine/lessons/python-foundations/core-datatypes)

scripts/new_exercise.py

@@ -66,6 +66,12 @@ def test_{func_name}_placeholder():
 top-level code, no functions needed. Say what the script should print
 (or which variables it should end up with).
 
+### Run the tests
+To run the tests, run the following command in the directory root (`python-excercises`):
+```bash
+python check.py {number:02d}
+```
+
 ## Notes
 
 TODO: mention any edge cases, hints, or background concepts a learner