Update src/matrix.jl

Co-authored-by: Christopher Rackauckas <[email protected]>

Author: vpuri3

src/matrix.jl

@@ -79,7 +79,8 @@ LinearAlgebra.ldiv!(v::AbstractVecOrMat, L::MatrixOperator, u::AbstractVecOrMat)
 LinearAlgebra.ldiv!(L::MatrixOperator, u::AbstractVecOrMat) = ldiv!(L.A, u)
 
 """
-    DiagonalOperator(diag, [; update_func])
+```julia
+DiagonalOperator(diag, [; update_func])
 
 Represents a time-dependent elementwise scaling (diagonal-scalign) operation.
 The update function is called by `update_coefficients!` and is assumed to have