[Grade School and Relative Distance]: Corrected & Modified Instruction Appends

exercises/practice/grade-school/.docs/instructions.append.md

@@ -3,7 +3,6 @@
 ## How this exercise is structured for the Python track
 
 The tests for this exercise expect your solution to be implemented as a School `class` in Python.
-If you are unfamiliar with `class`es in Python, [concept:python/classes]() and [classes][classes in python] (_from the Python docs_) are good places to start.
-
+If you are unfamiliar with `class`es in Python, [concept:python/classes]() and [`classes` in the official Python documentation][classes in python] are good places to start.
 
 [classes in python]: https://docs.python.org/3/tutorial/classes.html

exercises/practice/relative-distance/.docs/instructions.append.md

@@ -3,10 +3,10 @@
 ## How this exercise is structured for the Python track
 
 The tests for this exercise expect your solution to be implemented as a RelativeDistance `class` in Python.
-If you are unfamiliar with `class`es in Python, [concept:python/classes]() and [classes][classes in python] (_from the Python docs_) are good places to start.
+If you are unfamiliar with `class`es in Python, [concept:python/classes]() and [`classes` in the official Python documentation][classes in python] are good places to start.
 
 
-`RelativeDistance` should be initialized (_see [__init__()][init] for more information_)_ using `family_tree`, a dictionary where the `keys` are individuals and `values` are `list`s of that individual's children.
+`RelativeDistance` should be initialized (_see [`__init__()`][init] for more information_) using `family_tree`, a dictionary where the `keys` are individuals and `values` are `list`s of that individual's children.
 You will also need to implement a `degree_of_separation` [method][methods] which will return the degree of separation between `person_a` and `person_b` who are individuals in the passed-in family tree.
 
 
@@ -17,20 +17,33 @@ Then you can add your logic to the `degree_of_separation` method to calculate th
 
 ## Exception messages
 
-Sometimes it is necessary to [raise an exception](https://docs.python.org/3/tutorial/errors.html#raising-exceptions).
+Sometimes it is necessary to [raise an exception][raising-exceptions].
 When you do this, you should always include a **meaningful error message** to indicate what the source of the error is.
 This makes your code more readable and helps significantly with debugging.
-For situations where you know that the error source will be a certain type, you can choose to raise one of the [built in error types](https://docs.python.org/3/library/exceptions.html#base-classes), but should still include a meaningful message.
+For situations where you know that the error source will be a certain type, you can choose to raise one of the [built in error types][base-error-classes], but should still include a meaningful message.
 
-This particular exercise requires that you use the [raise statement](https://docs.python.org/3/reference/simple_stmts.html#the-raise-statement) to "throw" multiple `ValueError`s.
+This particular exercise requires that you use the [raise statement][raise-statement] to "throw" multiple `ValueError`s.
 In the first scenario, you will need to raise a `ValueError` when either one or both of the people passed to the `RelativeDistance.degree_of_separation` method are not present in the family tree.
+
+```python
+# Example when Person A is not in the tree.
+raise ValueError("Person A not in family tree.")
+```
+
 If both people are present in the family tree, you will need to raise a `ValueError` when there is no valid connection between them as defined by the rules.
-The tests will only pass if you both `raise` the expected `exception` type and include the expected message with it.
 
-Please check the tests and their expected results carefully, as these instructions are not exhaustive.
+```python
+# Example when there are no valid connections.
+raise ValueError("No connection between person A and person B.")
+```
 
+The tests will only pass if you both `raise` the expected `exception` type and include the expected message with it.
+Please check the tests and their expected results carefully, as these instructions are not exhaustive.
 
+[base-error-classes]: https://docs.python.org/3/library/exceptions.html#base-classes
 [classes in python]: https://docs.python.org/3/tutorial/classes.html
 [init]: https://docs.python.org/3/reference/datamodel.html#object.__init__
 [methods]: https://docs.python.org/3/tutorial/classes.html#class-definition-syntax
+[raising-exceptions]: https://docs.python.org/3/tutorial/errors.html#raising-exceptions
+[raise-statement]: https://docs.python.org/3/reference/simple_stmts.html#the-raise-statement
 [special-methods]: https://docs.python.org/3.11/reference/datamodel.html#special-method-names