🐛 Fix unbalanced parenthesis

Closes #47

Author: nipunsadvilkar

pysbd/cleaner.py

@@ -99,7 +99,7 @@ def search_for_connected_sentences(self, word, txt, regex, rule):
         if any(a in word for a in Abbreviation.ABBREVIATIONS):
             return txt
         new_word = Text(word).apply(rule)
-        txt = re.sub(word, new_word, txt)
+        txt = re.sub(re.escape(word), new_word, txt)
         return txt
 
     def check_for_no_space_in_between_sentences(self):