#57 getNbClosedParanthesis() method returns 0

[Malapert]

The getNbClosedParanthesis() returns 0 even is it exists some parenthesis in the SQL statement.

In addition, some of the methods are not well spelt.

• getNbClosedParanthesis() should be getNbClosedParenthesis()
• getNbOpenedParanthesis() should be getNbOpenedParenthesis()