mat: fix typo
@@ -617,7 +617,7 @@ func (c *Cholesky) SymRankOne(orig *Cholesky, alpha float64, x Vector) (ok bool)
c, s, r, _ := blas64.Rotg(umat.Data[i*stride+i], work[i])
if r < 0 {
// Multiply by -1 to have positive diagonal
- // elemnts.
+ // elements.
r *= -1
c *= -1
s *= -1
