add missing trailing commas (#79299)
diff --git a/dev/bots/analyze.dart b/dev/bots/analyze.dart
index 8b84416..7cf2571 100644
--- a/dev/bots/analyze.dart
+++ b/dev/bots/analyze.dart
@@ -128,7 +128,7 @@
final RegExp _findDeprecationPattern = RegExp(r'@[Dd]eprecated');
final RegExp _deprecationPattern1 = RegExp(r'^( *)@Deprecated\($'); // flutter_ignore: deprecation_syntax (see analyze.dart)
final RegExp _deprecationPattern2 = RegExp(r"^ *'(.+) '$");
-final RegExp _deprecationPattern3 = RegExp(r"^ *'This feature was deprecated after v([0-9]+)\.([0-9]+)\.([0-9]+)(\-[0-9]+\.[0-9]+\.pre)?\.'$");
+final RegExp _deprecationPattern3 = RegExp(r"^ *'This feature was deprecated after v([0-9]+)\.([0-9]+)\.([0-9]+)(\-[0-9]+\.[0-9]+\.pre)?\.',?$");
final RegExp _deprecationPattern4 = RegExp(r'^ *\)$');
/// Some deprecation notices are special, for example they're used to annotate members that
