update joda-time javadoc url

csharp/src/Google.Protobuf/WellKnownTypes/Timestamp.cs

@@ -112,7 +112,7 @@ namespace Google.Protobuf.WellKnownTypes {
   /// to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime)
   /// with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one
   /// can use the Joda Time's [`ISODateTimeFormat.dateTime()`](
-  /// http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime())
+  /// http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime--)
   /// to obtain a formatter capable of generating timestamps in this format.
   /// </summary>
   public sealed partial class Timestamp : pb::IMessage<Timestamp> {

objectivec/google/protobuf/Timestamp.pbobjc.h

@@ -126,7 +126,7 @@ typedef GPB_ENUM(GPBTimestamp_FieldNumber) {
  * to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime)
  * with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one
  * can use the Joda Time's [`ISODateTimeFormat.dateTime()`](
- * http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime())
+ * http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime--)
  * to obtain a formatter capable of generating timestamps in this format.
  **/
 @interface GPBTimestamp : GPBMessage

php/src/Google/Protobuf/Timestamp.php

@@ -64,7 +64,7 @@ use Google\Protobuf\Internal\GPBUtil;
  * to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime)
  * with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one
  * can use the Joda Time's [`ISODateTimeFormat.dateTime()`](
- * http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime())
+ * http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime--)
  * to obtain a formatter capable of generating timestamps in this format.
  *
  * Generated from protobuf message <code>google.protobuf.Timestamp</code>

src/google/protobuf/timestamp.proto

@@ -114,7 +114,7 @@ option objc_class_prefix = "GPB";
 // to this format using [`strftime`](https://docs.python.org/2/library/time.html#time.strftime)
 // with the time format spec '%Y-%m-%dT%H:%M:%S.%fZ'. Likewise, in Java, one
 // can use the Joda Time's [`ISODateTimeFormat.dateTime()`](
-// http://joda-time.sourceforge.net/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime())
+// http://www.joda.org/joda-time/apidocs/org/joda/time/format/ISODateTimeFormat.html#dateTime--)
 // to obtain a formatter capable of generating timestamps in this format.
 //
 //