message: Fix typo in mat.hpp
diff: @@ -2418,7 +2418,7 @@ public:
  void copyTo( OutputArray m ) const;
  //! copies those matrix elements to "m" that are marked with non-zero mask elements.
  void copyTo( OutputArray m, InputArray mask ) const;
  - //! converts matrix to another datatype with optional scalng. See cvConvertScale.
  + //! converts matrix to another datatype with optional scaling. See cvConvertScale.
  void convertTo( OutputArray m, int rtype, double alpha=1, double beta=0 ) const;
  void assignTo( UMat& m, int type=-1 ) const;
  