change URLs in the header files

Rename them to cpufreq_* instead of test_*. That will allow to add
the other subsystem blocks without name conflict.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
diff --git a/cpufreq/test_06.sh b/cpufreq/test_06.sh
index 5e8256d..cb75e7f 100755
--- a/cpufreq/test_06.sh
+++ b/cpufreq/test_06.sh
@@ -23,7 +23,7 @@
 #       - initial API and implementation
 #
 
-# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/QA/Scripts#test_06
+# URL : https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/QA/Scripts#cpufreq_06
 
 source ../include/functions.sh