Documentation: ref-manual - Updated LIC_FILES_CHKSUM example.

One of the examples used "startline" instead of "beginline".
Correction made.

(From yocto-docs rev: 59345ad197619280bef7a469d671feae80f0c4e6)

Signed-off-by: Scott Rifenbark <scott.m.rifenbark@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

documentation/poky-ref-manual/technical-details.xml

@@ -725,7 +725,7 @@
             <para>
                 You can also use relative paths as shown in the following example: 
                 <literallayout class='monospaced'>
-     LIC_FILES_CHKSUM = "file://src/ls.c;startline=5;endline=16;\
+     LIC_FILES_CHKSUM = "file://src/ls.c;beginline=5;endline=16;\
                                          md5=bb14ed3c4cda583abc85401304b5cd4e"
      LIC_FILES_CHKSUM = "file://../license.html;md5=5c94767cedb5d6987c902ac850ded2c6"
                 </literallayout>