NaCl docs: clarify Chrome apps instead of packaged apps

native_client_sdk/src/doc/sdk/release-notes.rst

 .. _sdk-release-notes:
 
 #############
 Release Notes
 #############
 
 The dates in the following release notes denote when Chrome and the NaCl SDK
 reached canary status. The stable release is typically 6 weeks later.
 
 Chrome/Pepper 42 (20 February 2015)
@@ skipping 188 matching lines @@
 PNaCl (15 May 2013)
 ===================
 
 * Portable Native Client (PNaCl) is currently available for developer preview
   in Chrome 29 or higher.
 * To produce a PNaCl executable (.pexe) file, you must use the pnacl toolchain
   in the current ``pepper_canary`` bundle. Chrome 29 does not support .pexe
   files produced by earlier versions of the pnacl toolchain (that is,
   executables compiled with the ``pepper_28`` bundle or earlier).
 * To run an application with a PNaCl module, you must launch Chrome 29 with the
-  ``--enable-pnacl`` flag (for `packaged apps </apps/about_apps>`_), or the
-  ``--enable-nacl`` flag (for other apps).
+  ``--enable-pnacl`` flag (for `Chrome apps </apps>`_), or the ``--enable-nacl``
+  flag (for other apps).
 * When you launch Chrome with the ``--enable-pnacl`` flag, Chrome loads a PNaCl
   translator in the background. Wait about a minute after you launch Chrome and
   check `chrome://nacl <chrome://nacl>`_ to verify that the translator loaded.
 * PNaCl translators are currently available for 32-bit x86, 64-bit x86, and ARM
   architectures.
 * PNaCl applications must use the newlib C library (glibc and dynamic linking
   are not supported yet).
 * The intermediate representation (IR) format may change prior to the release
   of PNaCl. If so, you will need to recompile your application with the pnacl
   toolchain in a new SDK bundle.
@@ skipping 458 matching lines @@
 
 PPAPI
 -----
 
 * The ``CompletionCallbackFactory`` class template now takes a thread traits
   class as its second parameter. For details see the `CompletionCallbackFactory
   class template reference
   </native-client/pepper_stable/cpp/classpp_1_1_completion_callback_factory#details>`_.
 
 .. TODO: Port release notes for older releases