Merge pull request #10914 from edx/clrux/ac-178

LMS: addressing contrast on the Instructor dashboard

lms/static/sass/course/instructor/_instructor_2.scss

@@ -303,7 +303,7 @@
     display: none;
 
     p {
-      color: #a2a2a2;
+      color: $gray-d2;
       font-style: italic;
     }
   }