docs: Add GL_KHR_blend_equation_advanced to relnotes.
diff --git a/docs/relnotes/12.1.0.html b/docs/relnotes/12.1.0.html
index 2643a0c..f744864 100644
--- a/docs/relnotes/12.1.0.html
+++ b/docs/relnotes/12.1.0.html
@@ -56,6 +56,7 @@
 <li>GL_ARB_stencil_texturing on i965/hsw</li>
 <li>GL_ARB_texture_stencil8 on i965/hsw</li>
 <li>OpenGL ES 3.1 on i965/hsw</li>
+<li>GL_KHR_blend_equation_advanced on i965</li>
 </ul>
 
 <h2>Bug fixes</h2>