change CONFIG_SHARP_SETTINGS description

Jenkins only tests experiments which match
"AV1 experiment flag."

Change-Id: Idf71a7ae75c99f3ebe50d2e6b123ae48d6e9ea10
diff --git a/build/cmake/aom_config_defaults.cmake b/build/cmake/aom_config_defaults.cmake
index ca48f8e..7318d9c 100644
--- a/build/cmake/aom_config_defaults.cmake
+++ b/build/cmake/aom_config_defaults.cmake
@@ -135,8 +135,7 @@
 set_aom_config_var(CONFIG_RD_DEBUG 0 NUMBER "AV1 experiment flag.")
 set_aom_config_var(CONFIG_2PASS_PARTITION_SEARCH_LVL 1 NUMBER
                    "AV1 experiment flag.")
-set_aom_config_var(CONFIG_SHARP_SETTINGS 0 NUMBER
-                   "Use sharper encoding settings")
+set_aom_config_var(CONFIG_SHARP_SETTINGS 0 NUMBER "AV1 experiment flag.")
 set_aom_config_var(CONFIG_INTEGERIZE_SGR 1 NUMBER "AV1 experiment flag.")
 set_aom_config_var(CONFIG_ONE_PASS_SVM 0 NUMBER "AV1 experiment flag.")