Fix formatting in NEWS entry for dataclass behavior

Author: bkap123

Misc/NEWS.d/next/Library/2026-02-17-23-50-41.gh-issue-144749.sv3Ztr.rst

@@ -1,3 +1,3 @@
-Previously descriptors that return themselves from calls to  `__get__` were 
-treated as default values in a dataclass. Now, a `TypeError` is raised if no 
-initial value is provided to the dataclass constructor.
+Previously descriptors that return themselves from calls to  `__get__` were
+treated as default values in a dataclass. Now, a `TypeError` is raised if no
+initial value is provided to the dataclass constructor.