Fix study12

examples/thermal_edge_flow/study12.geo

@@ -21,7 +21,7 @@ res2 = 2^-split * 2^-2; // bulk
 res3 = 2^-split * 2^-6; // topright edge
 res4 = 2^-split * 2^-8; // leftbot focus
 res5 = 2^-split * 2^-exp5; // inner edge focus
-res6 = 2^-split * 2^-8; // inner edge topright
+res6 = 2^-split * 2^-9; // inner edge topright
 res7 = 2^-split * 2^-5; // focus bulk
 res8 = 2^-split * 2^-9; // inner edge leftbot
 res9 = 2^-split * 2^-2; // inner bulk middle