bpo-42238: [doc] Avoid hardcoding fast-moving lines in susp-ignored.csv. (GH-30981)

Author: JulienPalard

Doc/tools/susp-ignored.csv

@@ -388,5 +388,5 @@ reference/compound_stmts,324,:keyword,"and except* in the same :keyword:`try`. :
 reference/compound_stmts,324,`,"and except* in the same :keyword:`try`. :keyword:`break`,"
 reference/compound_stmts,324,:keyword,:keyword:`continue` and :keyword:`return` cannot appear in an except*
 reference/compound_stmts,324,`,:keyword:`continue` and :keyword:`return` cannot appear in an except*
-whatsnew/changelog,178,:CON,": os.path.abspath(“C:CON”) is now fixed to return “\.CON”, not"
-whatsnew/changelog,922,::,Lib/email/mime/nonmultipart.py::MIMENonMultipart
+whatsnew/changelog,,:CON,": os.path.abspath(“C:CON”) is now fixed to return “\.CON”, not"
+whatsnew/changelog,,::,Lib/email/mime/nonmultipart.py::MIMENonMultipart