Fix bug in regular expression stripping quotes.

Change-Id: Iaf84a9a1f00b31daf7225991c4cfc5f17b578028
diff --git a/java/src/com/android/inputmethod/latin/spellcheck/AndroidWordLevelSpellCheckerSession.java b/java/src/com/android/inputmethod/latin/spellcheck/AndroidWordLevelSpellCheckerSession.java
index d6de945..1322ce2 100644
--- a/java/src/com/android/inputmethod/latin/spellcheck/AndroidWordLevelSpellCheckerSession.java
+++ b/java/src/com/android/inputmethod/latin/spellcheck/AndroidWordLevelSpellCheckerSession.java
@@ -59,7 +59,7 @@
     private final ContentObserver mObserver;
 
     private static final String quotesRegexp =
-            "\\u0022|\\u0027|\\u0060|\\u00B4|\\u2018|\\u2018|\\u201C|\\u201D";
+            "(\\u0022|\\u0027|\\u0060|\\u00B4|\\u2018|\\u2018|\\u201C|\\u201D)";
 
     private static final class SuggestionsParams {
         public final String[] mSuggestions;