fix typo in classname: OpenerHepler -> OpenerHelper

src/com/owncloud/android/db/DbHandler.java

@@ -31,14 +31,14 @@ import android.database.sqlite.SQLiteOpenHelper;
  */
 public class DbHandler {
     private SQLiteDatabase mDB;
-    private OpenerHepler mHelper;
+    private OpenerHelper mHelper;
     private final String mDatabaseName = "ownCloud";
     private final int mDatabaseVersion = 1;
     
     private final String TABLE_INSTANT_UPLOAD = "instant_upload";
 
     public DbHandler(Context context) {
-        mHelper = new OpenerHepler(context);
+        mHelper = new OpenerHelper(context);
         mDB = mHelper.getWritableDatabase();
     }
 
@@ -74,8 +74,8 @@ public class DbHandler {
         
     }
     
-    private class OpenerHepler extends SQLiteOpenHelper {
-        public OpenerHepler(Context context) {
+    private class OpenerHelper extends SQLiteOpenHelper {
+        public OpenerHelper(Context context) {
             super(context, mDatabaseName, null, mDatabaseVersion);
         }