Replace mistaken dartdoc [Foo..bar] references with [Foo.bar] (#62338)

packages/flutter/lib/src/material/divider.dart

@@ -138,7 +138,7 @@ class Divider extends StatelessWidget {
   /// {@end-tool}
   final Color color;
 
-  /// Computes the [BorderSide] that represents a divider..
+  /// Computes the [BorderSide] that represents a divider.
   ///
   /// If [color] is null, then [DividerThemeData.color] is used. If that is also
   /// null, then [ThemeData.dividerColor] is used.

packages/flutter/lib/src/material/input_decorator.dart

@@ -2801,7 +2801,7 @@ class InputDecoration {
   ///
   /// A collapsed decoration cannot have [labelText], [errorText], an [icon].
   ///
-  /// To create a collapsed input decoration, use [InputDecoration..collapsed].
+  /// To create a collapsed input decoration, use [InputDecoration.collapsed].
   final bool isCollapsed;
 
   /// An icon that appears before the [prefix] or [prefixText] and before