Fix bullet points

Signed-off-by: Aaron Erhardt <aaron.erhardt@t-online.de>

Matlab/Matlab.md

@@ -386,13 +386,13 @@ plot(x, y, 'color', [0, 0.6, 0.2]); % RGB color
 plot(x, y, 'LineWidth', 2); % set line width to 2 px
 ```
 
-+ Line width
++ Marker color
 
 ```matlab
 plot(x, y, 'MarkerFaceColor', [0, 0.6, 0.2]); % RGB color of markers
 ```
 
-+ Line width
++ Marker size
 
 ```matlab
 plot(x, y, 'MarkerSize', 7); % set marker size to 7 px