refactor: format

Author: AayushSabharwal

docs/src/examples/modelingtoolkitize_index_reduction.md

@@ -56,7 +56,7 @@ Specifically, for a pendulum with unit mass and length $L$, which thus has
 kinetic energy $\frac{1}{2}(v_x^2 + v_y^2)$,
 potential energy $gy$,
 and holonomic constraint $x^2 + y^2 - L^2 = 0$.
-The Lagrange multiplier related to this constraint is equal to half of $T$, 
+The Lagrange multiplier related to this constraint is equal to half of $T$,
 and represents the tension in the rope of the pendulum.
 
 As a good DifferentialEquations.jl user, one would follow