fix the "MaximumRaySteps" slider

glsl/raymarching.frag

#group DistranceEstimator
uniform float MinimumDistance; slider[0.0,0.01,10.0]
uniform int MaximumRaySteps; slider[10,0,100]
uniform int MaximumRaySteps; slider[0,10,100]
// Adapted with minimal changes from [1].
float trace(vec3 from, vec3 direction) {