Update concepts/recursion/introduction.md

Co-authored-by: Yrahcaz <74512479+Yrahcaz7@users.noreply.github.com>

Author: BethanyG

concepts/recursion/introduction.md

@@ -2,7 +2,7 @@
 
 Recursion is a way to repeat code in a function by the function calling itself.
 It can be viewed as another way to loop/iterate. 
-Like looping, a Boolean expression or `True / False` test is used to know when to stop the recursive execution.
+Like looping, a Boolean expression or `True`/`False` test is used to determine when to stop the recursive execution.
 _Unlike_ looping, recursion without termination in Python cannot not run infinitely.
 Values used in each function call are placed in their own [frame][stack-frame] on the Python [interpreter stack][what-is-the-call-stack].
 If the total number of function calls takes up more space than the stack has room for, it will result in an error.