message: Fix typo in the docs
diff: @@ -189,7 +189,7 @@ Energy conservation is one of the key components of a good BRDF for physically b
  ## Specular BRDF
  -For the specular term, fm is a mirror BRDF that can be modeled with the Fresnel law, noted Fin the Cook-Torrance approximation of the microfacet model integration:
  +For the specular term, fm is a mirror BRDF that can be modeled with the Fresnel law, noted $F$ in the Cook-Torrance approximation of the microfacet model integration:
  $$\begin{equation}
  f_r(v,l) = \frac{D(h, \alpha) G(v, l, \alpha) F(v, h, f0)}{4(\NoV)(\NoL)}
  