updated docs

docs/docs/parsing.xml

@@ -487,6 +487,15 @@
                   </implementation>
                </implementations>
             </extension>
+
+            <extension>
+               <name>get_option</name>
+               <spec_file>dlib/cmd_line_parser/get_option_abstract.h</spec_file>
+               <description>This extension provides a convenience function for accessing the 
+                  options to a command line argument or a <a href="#config_reader">config_reader</a>.  It 
+                  is automatically #included when using the command line parser or config reader.
+                  </description>
+            </extension>
          </extensions>              
                                     
                         

docs/docs/term_index.xml

@@ -1152,7 +1152,7 @@
          <term link="parsing.html#utf8_uifstream" name="basic_utf8_ifstream"/>
          <term file="parsing.html" name="base64"/>
          <term file="parsing.html" name="cmd_line_parser"/>
-         <term link="dlib/cmd_line_parser/get_option_abstract.h.html#get_option" name="get_option"/>
+         <term file="parsing.html" name="get_option"/>
          <term link="dlib/cmd_line_parser/get_option_abstract.h.html#option_parse_error" name="option_parse_error"/>
          <term file="dlib/interfaces/cmd_line_parser_option.h.html" name="cmd_line_parser_option"/>
          <term link="parsing.html#cmd_line_parser" name="command line parsing"/>