docs: treat the test description as cdata

Enclose the test description in cdata tags since the test descriptions
come from the tests themselves and may not be escaped for use in xml.

Signed-off-by: Thomas Wood <thomas.wood@intel.com>

docs/reference/intel-gpu-tools/Makefile.am

@@ -36,14 +36,14 @@ xml/igt_test_programs_%_description.xml: $(TESTLISTS)
 	for test in `cat $(TESTLISTS) | tr ' ' '\n' | grep "^$*" | sort`; do \
 		echo "<refsect2 id=\"$$test\"><title>" >> $@; \
 		echo "$$test" | perl -pe 's/(?<=_)$(KEYWORDS)(?=(_|\W))/<acronym>\1<\/acronym>/g' >> $@; \
-		echo "</title><para>" >> $@; \
+		echo "</title><para><![CDATA[" >> $@; \
 		if [ -x $(top_builddir)/tests/$$test ]; then \
 			testprog=$(top_builddir)/tests/$$test; \
 		else \
 			testprog=$(top_srcdir)/tests/$$test; \
 		fi; \
 		 ./$$testprog --help-description >> $@; \
-		echo "</para>" >> $@; \
+		echo "]]></para>" >> $@; \
 		if ./$$testprog --list-subtests > /dev/null ; then \
 			echo "<refsect3><title>Subtests</title>" >> $@; \
 			echo "<simplelist>" >> $@; \