Document change to cover.erl source search

The change was introduced in commit 2923103.

lib/tools/doc/src/cover.xml

@@ -5,7 +5,7 @@
   <header>
     <copyright>
       <year>2001</year>
-      <year>2012</year>
+      <year>2013</year>
       <holder>Ericsson AB, All Rights Reserved</holder>
     </copyright>
     <legalnotice>
@@ -315,9 +315,10 @@
           file, i.e. using <c>compile_beam/1</c> or
           <c>compile_beam_directory/0,1</c>, it is assumed that the
           source code can be found in the same directory as the
-          <c>.beam</c> file, or in <c>../src</c> relative to that
-          directory. If no source code is found, 
-          <c>,{error,no_source_code_found}</c> is returned.</p>
+          <c>.beam</c> file, in <c>../src</c> relative to that
+          directory, or at the source path in
+          <c>Module:module_info(compile)</c>. If no source code is found,
+          <c>{error,no_source_code_found}</c> is returned.</p>
 	<p>HINT: It is possible to issue multiple analyse_to_file commands at
 	  the same time. </p> 
       </desc>