hide and nothing return for whole block stdout

Author: Vaibhavdixit02

docs/src/tutorials/constraints.md

@@ -43,6 +43,7 @@ Let's check that the constraints are satisfied and the objective is lower than a
 res = zeros(2)
 cons(res, sol.u, _p)
 prob.f(sol.u, _p)
+nothing # hide
 ```
 
 We can also use the Ipopt library with the OptimizationMOI package.
@@ -56,14 +57,15 @@ res = zeros(2)
 cons(res, sol.u, _p)
 println(res)
 prob.f(sol.u, _p)
+nothing # hide
 ```
 
 We can also use ModelingToolkit as our AD backend and generate symbolic derivatives and expression graph for the objective and constraints.
 
 Let's modify the bounds to use the function as an equality constraint. The constraint now becomes -
 
 
-```
+```math
 \begin{align}
 
 x_1^2 + x_2^2 = 1.0 \\