message: Fix the link to the Spherical Harmonics section
diff: @@ -1649,7 +1649,7 @@ The irradiance integral $\Ed$ can be trivially, albeit slowly[^iblDiffuse3], pre
  ![Figure [iblIrradiance]: Image-based irradiance map using the lambertian BRDF](images/ibl/ibl_irradiance.png style="max-width:100%;")
  -However, the irradiance can also be approximated very closely by a decomposition into [Spherical Harmonics] (SH) and calculated at runtime cheaply. It is usually best to avoid texture fetches on mobile and free-up a texture unit. Even if it is stored into a cubemap, it is orders of magnitude faster to pre-compute the integral using SH decomposition followed by a rendering.
  +However, the irradiance can also be approximated very closely by a decomposition into Spherical Harmonics (SH, described in more details in the Spherical Harmonics section) and calculated at runtime cheaply. It is usually best to avoid texture fetches on mobile and free-up a texture unit. Even if it is stored into a cubemap, it is orders of magnitude faster to pre-compute the integral using SH decomposition followed by a rendering.
  SH decomposition is similar in concept to a Fourier transform, it expresses the signal over an orthonormal base in the frequency domain. The properties that interests us most are:
  