Fixed contraction on preprocessing.py

preprocessing.py

@@ -19,7 +19,7 @@ contractions = {
     r"(?<![\w.])nisso(?![$\w])": r"em isso",
     r"(?<![\w.])naquele(s)?(?![$\w])": r"em aquele\g<1>",
     r"(?<![\w.])naquela(s)?(?![$\w])": r"em aquela\g<1>",
-    r"(?<![\w.])naquilo(?![$\w])": r"em aquelo",
+    r"(?<![\w.])naquilo(?![$\w])": r"em aquilo",
     r"(?<![\w.])duma(s)?(?![$\w])": r"de uma\g<1>",
     r"(?<![\w.])daqui(?![$\w])": r"de aqui",
     r"(?<![\w.])dali(?![$\w])": r"de ali",