Fix some doc formatting problems, stop using "set" methods for NumberFormat

pkg/intl/test/number_closure_test.dart

 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /**
  * Tests based on the closure number formatting tests.
  */
 library number_closure_test;
 
 import "package:intl/intl.dart";
 import "package:unittest/unittest.dart";
@@ skipping 72 matching lines @@
   str = fmt.format(-1234.56);
   expect('-123,456.00%', str);
 
   fmt = new NumberFormat.percentPattern();
   str = fmt.format(-1234.579);
   expect('-123,458%', str);
 }
 
 void testCustomPercentage() {
   var fmt = new NumberFormat.percentPattern();
-  fmt.setMaximumFractionDigits(1);
-  fmt.setMinimumFractionDigits(1);
+  fmt.maximumFractionDigits = 1;
+  fmt.minimumFractionDigits = 1;
   var str = fmt.format(0.1291);
   expect('12.9%', str);
-  fmt.setMaximumFractionDigits(2);
-  fmt.setMinimumFractionDigits(1);
+  fmt.maximumFractionDigits = 2;
+  fmt.minimumFractionDigits = 1;
   str = fmt.format(0.129);
   expect('12.9%', str);
-  fmt.setMaximumFractionDigits(2);
-  fmt.setMinimumFractionDigits(1);
+  fmt.maximumFractionDigits = 2;
+  fmt.minimumFractionDigits = 1;
   str = fmt.format(0.12);
   expect('12.0%', str);
-  fmt.setMaximumFractionDigits(2);
-  fmt.setMinimumFractionDigits(1);
+  fmt.maximumFractionDigits = 2;
+  fmt.minimumFractionDigits = 1;
   str = fmt.format(0.12911);
   expect('12.91%', str);
 }
 
 void testBasicFormat() {
   var fmt = new NumberFormat('0.0000');
   var str = fmt.format(123.45789179565757);
   expect('123.4579', str);
 }
 
@@ skipping 262 matching lines @@
 
 testLocaleSwitch() {
   Intl.withLocale("fr", verifyFrenchLocale);
 }
 
 void verifyFrenchLocale() {
   var fmt = new NumberFormat('#,###');
   var str = fmt.format(1234567890);
   expect('1\u00a0234\u00a0567\u00a0890', str);
 }