Fix docs on conditional expression grouping (GH-96447)

Author: kaya3

Doc/reference/expressions.rst

@@ -1889,7 +1889,7 @@ The following table summarizes the operator precedence in Python, from highest
 precedence (most binding) to lowest precedence (least binding).  Operators in
 the same box have the same precedence.  Unless the syntax is explicitly given,
 operators are binary.  Operators in the same box group left to right (except for
-exponentiation, which groups from right to left).
+exponentiation and conditional expressions, which group from right to left).
 
 Note that comparisons, membership tests, and identity tests, all have the same
 precedence and have a left-to-right chaining feature as described in the