docs: spec of SafeBag format

This spec defines the TLV-based format of SafeBag, replacing the
previous SecureBag which uses DER-based encoding.

Change-Id: I001153bd3f4246a0f84656167b00c6387b2fea07
Refs: #3048
diff --git a/docs/examples.rst b/docs/examples.rst
index b107aa7..c1ad084 100644
--- a/docs/examples.rst
+++ b/docs/examples.rst
@@ -45,10 +45,10 @@
    :emphasize-lines: 42,55-58,61,64,67,70,76
 
 
-Consumer that uses ndn::Scheduler
----------------------------------
+Consumer that uses Scheduler
+----------------------------
 
-The following example demonstrates how to use :ndn-cxx:`ndn::Scheduler` to schedule arbitrary
+The following example demonstrates how to use :ndn-cxx:`Scheduler` to schedule arbitrary
 events for execution at specific points of time.
 
 The library internally uses `boost::asio::io_service
@@ -57,7 +57,7 @@
 Data).  In addition to network-related operations, ``boost::asio::io_service`` can be used
 to execute any arbitrary callback within the processing thread (run either explicitly via
 ``io.run`` or implicitly via :ndn-cxx:`Face::processEvents` as in previous examples).
-:ndn-cxx:`ndn::Scheduler` is just a wrapper on top of ``boost::asio::io_service``,
+:ndn-cxx:`Scheduler` is just a wrapper on top of ``boost::asio::io_service``,
 allowing simple interface to schedule tasks at specific times.
 
 The highlighted lines in the example demonstrate all that is needed to express a second