fix(matlab): reset test warn "not implemented"

Author: djmaxus

init.m

@@ -60,7 +60,7 @@
 "\n");
 
 if args.reset_test
-    reset_file('test.m','assert(true);\n');
+    reset_file('test.m',"warning('not implemented');\n");
 end
 
 delete_file('.github/workflows/sync-mirror.yml');