Updated preprocess_text.py to fix NeMo-text-processing :: WARNING :: Your input is too long and could take a long time to normalize. Use split_text_into_sentences() to make the input shorter and then call normalize_list().

Updated preprocess_text.py to fix NeMo-text-processing :: WARNING :: Your input is too long and could take a long time to normalize. Use split_text_into_sentences() to make the input shorter and then call normalize_list(). #17168