fixed some line spacing issues

Author: TiMauzi

nltk/wsd.py

@@ -12,17 +12,22 @@
 
 def lesk(context_sentence, ambiguous_word, pos=None, synsets=None, lang="eng"):
     """Return a synset for an ambiguous word in a context.
+
     :param iter context_sentence: The context sentence where the ambiguous word
          occurs, passed as an iterable of words.
     :param str ambiguous_word: The ambiguous word that requires WSD.
     :param str pos: A specified Part-of-Speech (POS).
     :param iter synsets: Possible synsets of the ambiguous word.
     :param str lang: WordNet language.
     :return: ``lesk_sense`` The Synset() object with the highest signature overlaps.
+
     This function is an implementation of the original Lesk algorithm (1986) [1].
+
     Usage example::
+
         >>> lesk(['I', 'went', 'to', 'the', 'bank', 'to', 'deposit', 'money', '.'], 'bank', 'n')
         Synset('savings_bank.n.02')
+
     [1] Lesk, Michael. "Automatic sense disambiguation using machine
     readable dictionaries: how to tell a pine cone from an ice cream
     cone." Proceedings of the 5th Annual International Conference on