Remove warning

content/research/2020-h-infinity-lecture/_index.md

@@ -327,7 +327,7 @@ Let's say we came up with the following controller.
 The bode plot of the Loop Gain is shown in Figure [Figure 8](#figure--fig:loop-gain-manual-afm) and we can verify that we have the wanted stability margins using the `margin` command:
 
 ```matlab
-  [Gm, Pm, ~, Wc] = margin(G*K)
+[Gm, Pm, ~, Wc] = margin(G*K);
 ```
 
 | Requirements                    | Manual Method |
@@ -906,7 +906,7 @@ At a frequency little bit above 100Hz, the phase of the loop gain reaches -180 d
 It is confirmed by checking the stability of the closed loop system:
 
 ```matlab
-  isstable(feedback(Gr,K))
+isstable(feedback(Gr,Kt))
 ```
 
 ```text