Fix link rendering (#3490)

* typo

* another typo

exercises/practice/atbash-cipher/.approaches/introduction.md

@@ -10,7 +10,7 @@ For decoding, it's similar - clean up (which automatically joins the chunks) and
 
 ## Approach: separate functions
 We use `str.maketrans` to create the encoding. 
-In `encode`, we use a [generator expression][generator expression] in `str.join`.
+In `encode`, we use a [generator expression][generator-expression] in `str.join`.
 ```python
 from string import ascii_lowercase
 ENCODING = str.maketrans(ascii_lowercase, ascii_lowercase[::-1])
@@ -43,4 +43,4 @@ For more detail, [read here][approach-mono-function].
 
 [approach-separate-functions]: https://exercism.org/tracks/python/exercises/atbash-cipher/approaches/separate-functions
 [approach-mono-function]: https://exercism.org/tracks/python/exercises/atbash-cipher/approaches/mono-function
-[generator expression]: https://www.programiz.com/python-programming/generator
+[generator-expression]: https://www.programiz.com/python-programming/generator

exercises/practice/robot-name/.approaches/introduction.md

@@ -56,4 +56,7 @@ class Robot:
         self.reset()
 ```
 
-For more detail and different ways to implement this, [read here][approach-name-on-the-fly].
+For more detail and different ways to implement this, [read here][approach-name-on-the-fly].
+
+[approach-name-on-the-fly]: https://exercism.org/tracks/python/exercises/robot-name/approaches/name-on-the-fly
+[approach-mass-name-generation]: https://exercism.org/tracks/python/exercises/robot-name/approaches/mass-name-generation