Update insitu.md

docs.it4i/software/viz/insitu.md

@@ -49,13 +49,13 @@ Provided example is a simple MPI program. Main executing part is written in FEDr
 
 
 ```c++
-#include ahoj.h
-
-int main() {
-
-
-return 0;
-}
+1 #include ahoj.h
+2
+3 int main() {
+4
+5
+6 return 0;
+7 }
 ```
 
 mpirun -n 2 ./CxxFullExample 30 30 30 ../SampleScripts/feslicescript.py