fix typos

Author: lixxbox

features/thumbnails.md

@@ -50,14 +50,14 @@ In "Expert" mode SuperSlicer has some very convenient options in the "Printer Se
 ## Cura
 
 The Cura plugin "Cura2Moonraker" is required for this. You can find this plugin and a install guide
-here: [https://github.com/emtrax-ltd/Cura2MoonrakerPlugin](https://github.com/emtrax-ltd/Cura2MoonrakerPlugin)
+here: [Cura2MoonrakerPlugin](https://github.com/emtrax-ltd/Cura2MoonrakerPlugin)
 
 ![Cura](img/Cura-thumbnails.png)
 
 ## ideaMaker (since v4.2.1)
 
 To enable thumbnails, open the `Advanced` tab in the `printer settings`, enable the `GCode Thumbnails for Octoprint and Mainsail` option and
-enter your prefered *square format* image size in the `Resolution` fields (e.g. `400 X 400`).
+enter your preferred *square format* image size in the `Resolution` fields (e.g. `400 X 400`).
 It's necessary that the thumbnail width and height resolution is equal.
 
-![ideaMaker](img/IdeaMaker4.2.1-thumbnails.png)
+![ideaMaker](img/IdeaMaker4.2.1-thumbnails.png)