refactor to follow the CONVENTIONS.md (#5530)

Co-authored-by: maiconpintoabreu <maicon@thinkpad02.exads.com>

examples/shaders/resources/shaders/glsl120/deferred_shading.fs

@@ -34,7 +34,7 @@ void main()
     vec3 ambient = albedo*vec3(0.1);
     vec3 viewDirection = normalize(viewPosition - fragPosition);
 
-    for (int i = 0; i < NR_LIGHTS; ++i)
+    for (int i = 0; i < NR_LIGHTS; i++)
     {
         if (lights[i].enabled == 0) continue;
         vec3 lightDirection = lights[i].position - fragPosition;

examples/shaders/resources/shaders/glsl120/mandelbrot_set.fs

@@ -41,7 +41,7 @@ void main()
         a = aa - bb + c.x;
         b = twoab + c.y;
 
-        ++iter;
+        iter++;
     }
 
     if (iter >= maxIterations)