automake: Add missing dependency for "check" target (fix parallel build)
automake: Add missing dependency for "check" target (fix parallel build)

Some unit tests use code from training. Those tests are enabled
if training is enabled, so for that case the "check" target
depends on the "training" target.

Signed-off-by: Stefan Weil <8d4c780fcfdc41841e5070f4c43da8958ba6aec0@weilnetz.de>

UB-Mannheim/tesseract,tesseract-ocr/tesseract,stweil/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,stweil/tesseract,jbarlow83/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,tesseract-ocr/tesseract,stweil/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,amitdo/tesseract,amitdo/tesseract,amitdo/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,amitdo/tesseract,stweil/tesseract,stweil/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract