Fix corrupted indentation

Author: rjkilpatrick

books/RayTracingTheNextWeek.html

@@ -1826,14 +1826,14 @@
                 auto accum = 0.0;
 
                 for (int i=0; i < 2; i++)
-                for (int j=0; j < 2; j++)
-                for (int k=0; k < 2; k++) {
-                    vec3 weight_v(u-i, v-j, w-k);
-                    accum += (i*uu + (1-i)*(1-uu))
-                    * (j*vv + (1-j)*(1-vv))
-                    * (k*ww + (1-k)*(1-ww))
-                    * dot(c[i][j][k], weight_v);
-                }
+                    for (int j=0; j < 2; j++)
+                        for (int k=0; k < 2; k++) {
+                            vec3 weight_v(u-i, v-j, w-k);
+                            accum += (i*uu + (1-i)*(1-uu))
+                                   * (j*vv + (1-j)*(1-vv))
+                                   * (k*ww + (1-k)*(1-ww))
+                                   * dot(c[i][j][k], weight_v);
+                        }
 
                 return accum;
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ C++