Isolated word spelling error corrector based on the noisy channel model.
corpus.txt , spell-errors.txt should be provided on the same folder
program's output name for predictios will be corrects.txt
running command: python3 proj1.py <test.txt> [noisy]
example without smoothing: python3 proj1.py test-words-misspelled.txt
example with smoothing: python3 proj1.py test-words-misspelled.txt noisy