adding two new links to the template for inserting empty code blocks

* doc/org.texi (Literal examples): A new link to the template for
  inserting empty code blocks.
  (Structure of code blocks): A new link to the template for inserting
  empty code blocks.

doc/org.texi

@@ -8994,7 +8994,8 @@ further details.}.  This is done with the @samp{src} block, where you also
 need to specify the name of the major mode that should be used to fontify the
 example@footnote{Code in @samp{src} blocks may also be evaluated either
 interactively or on export.  See @pxref{Working With Source Code} for more
-information on evaluating code blocks.}:
+information on evaluating code blocks.}, see @ref{Easy Templates} for
+shortcuts to easily insert code blocks.
 @cindex #+BEGIN_SRC
 
 @example
@@ -11639,7 +11640,8 @@ The following sections describe Org-mode's code block handling facilities.
 @cindex code block, structure
 @cindex source code, block structure
 
-The structure of code blocks is as follows:
+The structure of code blocks is as follows (empty code blocks may be inserted
+using Org-mode's @ref{Easy Templates} system):
 
 @example
 #+srcname: <name>