DOC: Fix testing macro name

Fix testing macro name: `TEST_SET_GET_OBJECT` does not exist as a testing
macro (or as any other macro in ITK).

Author: jhlegarreta

SoftwareGuide/Latex/Appendices/CodingStyleGuide.tex

@@ -3571,7 +3571,7 @@ \subsection{Code Layout in Tests}
 \item \code{foo} class instantiation and basic object checks (e.g.
 \code{ITK\_EXERCISE\_BASIC\_OBJECT\_METHODS}).
 \item \code{foo} class properties' input argument read and test (e.g. using the
-macros in \code{itkTestingMacro.h}, such as \code{ITK\_TEST\_SET\_GET\_OBJECT}, etc.).
+macros in \code{itkTestingMacro.h}, such as \code{ITK\_TEST\_SET\_GET\_VALUE}, etc.).
 \item \code{foo} class \code{Update()}.
 \item Regression checks.
 \item Output image write.