MLECO-1858: Documentation update

* Removing `_` in front of private functions and member

Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>
Change-Id: I5a5d652f9647ebb16d2d2bd16ab980e73f7be3cf
diff --git a/source/use_case/ad/include/AdPostProcessing.hpp b/source/use_case/ad/include/AdPostProcessing.hpp
index f3b35a1..7eaec84 100644
--- a/source/use_case/ad/include/AdPostProcessing.hpp
+++ b/source/use_case/ad/include/AdPostProcessing.hpp
@@ -38,7 +38,7 @@
 
     /** @brief      Given a wav file name return AD model output index.
      *  @param[in]  wavFileName Audio WAV filename.
-     *                          File name should be in format <anything>_<goes>_XX_<here>.wav
+     *                          File name should be in format anything_goes_XX_here.wav
      *                          where XX is the machine ID e.g. 00, 02, 04 or 06
      *  @return     AD model output index as 8 bit integer.
     **/