tests: Correct test names

Two tests had a name that indicated they drew a triangle
but actually drew a quad. Changed name to indicate a
quad is expected.
diff --git a/tests/render_tests.cpp b/tests/render_tests.cpp
index dabb02d..df575d4 100644
--- a/tests/render_tests.cpp
+++ b/tests/render_tests.cpp
@@ -652,7 +652,7 @@
     XGLTriangleTest(vertShaderText, fragShaderText, false);
 }
 
-TEST_F(XglRenderTest, TriangleWithVertexFetch)
+TEST_F(XglRenderTest, QuadWithVertexFetch)
 {
     static const char *vertShaderText =
             "#version 140\n"
@@ -1494,7 +1494,7 @@
         RecordImage(m_renderTargets[i]);
 }
 
-TEST_F(XglRenderTest, TriVertFetchAndVertID)
+TEST_F(XglRenderTest, QuadVertFetchAndVertID)
 {
     // This tests that attributes work in the presence of gl_VertexID