docs: document glUseProgram display list fix

docs/relnotes-7.5.2.html

@@ -47,6 +47,7 @@ tbd
 <li>Fixed Gallium glDrawPixels(GL_STENCIL_INDEX) failure.
 <li>Fixed GLSL linker/preprocessor version directive issue seen in Wine
     (such as bug 23946)
+<li>glUseProgram() is now compiled into display lists (bug 23746).
 </ul>