fix typos.

modules/core/include/opencv2/core.hpp

@@ -626,7 +626,7 @@ then pass the matrix to calcCovarMatrix .
 @param src input array that should have from 1 to 4 channels so that the results can be stored in
 Scalar_ 's.
 @param mean output parameter: calculated mean value.
-@param stddev output parameter: calculateded standard deviation.
+@param stddev output parameter: calculated standard deviation.
 @param mask optional operation mask.
 @sa  countNonZero, mean, norm, minMaxLoc, calcCovarMatrix
 */
@@ -1639,7 +1639,7 @@ CV_EXPORTS_W void mulTransposed( InputArray src, OutputArray dst, bool aTa,
 
 The function cv::transpose transposes the matrix src :
 \f[\texttt{dst} (i,j) =  \texttt{src} (j,i)\f]
-@note No complex conjugation is done in case of a complex matrix. It it
+@note No complex conjugation is done in case of a complex matrix. It
 should be done separately if needed.
 @param src input array.
 @param dst output array of the same type as src.