Add note about conflicting TCA corrections. (#593)

* Add note about conflicting TCA corrections.

raw chromatic aberrations shifts pixels based on observed TCA in the image content, and then if it's also enabled, lens correction shifts pixels further based on a fixed model, resulting in an over-correction.

content/module-reference/processing-modules/lens-correction.md

@@ -12,6 +12,7 @@ Automatically correct for (or simulate) lens distortion, transverse chromatic ab
 
 You can choose to either use lens correction data embedded in your Raw file (where present/supported) or correction data provided by the external [lensfun library](https://lensfun.github.io/).
 
+If TCA correction is enabled in this module, also using [_raw chromatic aberrations_](./raw-chromatic-aberrations.md) may cause aritifacts from overcorrection. 
 # lensfun correction data
 
 If your system's lensfun library has no correction profile for the automatically identified camera/lens combination, the controls for the three photometric parameters (below) are replaced with a warning message. You may try to find the right profile yourself by searching for it in the menu. 

content/module-reference/processing-modules/raw-chromatic-aberrations.md

@@ -14,6 +14,8 @@ This module currently only works for raw images recorded with a Bayer sensor (th
 
 The module will also not apply any corrections to any photos that have been identified as monochrome (see [developing monochrome images](../../guides-tutorials/monochrome.md) for more information).
 
+If this module is enabled, then TCA correction in [_lens correction_](./lens-correction.md) should not also be enabled, as it will conflict.
+
 # module controls
 
 iterations