Use 'for example' instead of 'in other words' in compound statement doc (GH-8401)

(cherry picked from commit 6921ef7)

Co-authored-by: Andrés Delfino <[email protected]>

Author: miss-islington

Doc/reference/compound_stmts.rst

@@ -203,7 +203,7 @@ returns the list ``[0, 1, 2]``.
       single: mutable sequence; loop over
 
    There is a subtlety when the sequence is being modified by the loop (this can
-   only occur for mutable sequences, i.e. lists).  An internal counter is used
+   only occur for mutable sequences, e.g. lists).  An internal counter is used
    to keep track of which item is used next, and this is incremented on each
    iteration.  When this counter has reached the length of the sequence the loop
    terminates.  This means that if the suite deletes the current (or a previous)