Change direction of IgnoreIntersection/TerminateRay tests

Changes the ray direction of the IgnoreIntersection and
TerminateRay tests such that it shoots the ray into the
center of the triangle, rather than exactly at one of
its edges.

Impacts tests:
dEQP-VK.ray_tracing_pipeline.misc.Op*

Components: Vulkan
VK-GL-CTS issue: 3771

Change-Id: Ic36cc125238323eb367412f220afe8907f700c8d
diff --git a/external/vulkancts/modules/vulkan/ray_tracing/vktRayTracingMiscTests.cpp b/external/vulkancts/modules/vulkan/ray_tracing/vktRayTracingMiscTests.cpp
index 9749982..2788e46 100644
--- a/external/vulkancts/modules/vulkan/ray_tracing/vktRayTracingMiscTests.cpp
+++ b/external/vulkancts/modules/vulkan/ray_tracing/vktRayTracingMiscTests.cpp
@@ -7784,7 +7784,7 @@
 				"    float tmin        = 0.001;\n"
 				"    float tmax        = 9.0;\n"
 				"    vec3  origin      = vec3(-1,  -1,  -1);\n"
-				"    vec3  target      = vec3(0.5, 0.5,  0);\n"
+				"    vec3  target      = vec3(0.0, 0.5,  0);\n"
 				"    vec3  direct      = normalize(target - origin);\n"
 				"\n"
 				"    traceRayEXT(topLevelAS, rayFlags, cullMask, 0, 0, 0, origin, tmin, direct, tmax, 0);\n"