Update vnc.md

docs.it4i/general/accessing-the-clusters/graphical-user-interface/vnc.md

@@ -37,9 +37,9 @@ username :60
 ```
 
 As you can see above, displays ":79" and ":60" are already occupied.
-Generally, you can choose display number freely *except these occupied numbers*.
-Also remember that display number should be lower or equal 99.
-Based on this, **we have chosen the display number 61** for us, as seen in the examples below.
+Generally, you can choose display number freely, *except these occupied numbers*.
+Also remember that display number should be lower than or equal to 99.
+Based on this requirement, we have chosen the display number 61, as seen in the examples below.
 
 !!! note
     Your situation may be different so the choice of your number may differ, as well. **Choose and use your own display number accordingly!**