demos: Unify capitlization in json output

Change-Id: Ie74c686af656e346789b30ec1aba41457170c6d2
diff --git a/demos/vulkaninfo.c b/demos/vulkaninfo.c
index 888761a..ff9438b 100644
--- a/demos/vulkaninfo.c
+++ b/demos/vulkaninfo.c
@@ -723,7 +723,7 @@
     printf("{\n");
     printf("\t\"$schema\": \"https://schema.khronos.org/vulkan/devsim_1_0_0.json#\",\n");
     printf("\t\"comments\": {\n");
-    printf("\t\t\"desc\": \"JSON configuration file describing GPU %u. Generated using the VulkanInfo program.\",\n", selected_gpu);
+    printf("\t\t\"desc\": \"JSON configuration file describing GPU %u. Generated using the vulkaninfo program.\",\n", selected_gpu);
     printf("\t\t\"vulkanApiVersion\": \"%d.%d.%d\"\n", vulkan_major, vulkan_minor, vulkan_patch);
     printf("\t}");
 }