[docs] Fix typo in the icons section (#12514)

* Update icons.md

* all good for me

* fixed typo

docs/src/pages/style/icons/icons.md

@@ -115,4 +115,4 @@ Optionally, you can set the icon color using one of the theme color properties:
 Both approaches work fine, however, there are some subtle differences, especially in terms of performance and rendering quality.
 Whenever possible SVG is preferred as it allows code splitting, supports more icons, renders faster and better.
 
-For more details, you can check out [why GiHub migrated](https://blog.github.com/2016-02-22-delivering-octicons-with-svg/) from font icons to SVG icons.
+For more details, you can check out [why GitHub migrated](https://blog.github.com/2016-02-22-delivering-octicons-with-svg/) from font icons to SVG icons.