[doc] Fix typo in what's new in 3.10 (GH-26911) (GH-26940)

The `try` statement was missing a colon and therefore was not exemplifying the correct `SyntaxError`.
(cherry picked from commit dcb1caef5bd8e90e1ecb4c07d7114e51b49fe37a)

Co-authored-by: Rodrigo Girão Serrão <rodrigogiraoserrao@gmail.com>

diff --git a/Doc/whatsnew/3.10.rst b/Doc/whatsnew/3.10.rst
index 5e510d8f6ed3aea0d5c1aa25784f4ae773bfd2ab..7ac627ba19b0e07b51b5abd6761f4d6db8cdda4a 100644 (file)
--- a/Doc/whatsnew/3.10.rst
+++ b/Doc/whatsnew/3.10.rst
@@ -278,7 +278,7 @@ have been incorporated. Some of the most notable ones are as follows:
 
     .. code-block:: python
 
-        >>> try
+        >>> try:
         ...     x = 2
         ... something = 3
           File "<stdin>", line 3