Improve image link for OpenSourceSwissKnife

Updated image link to a higher resolution version.

Author: MarkusTiede

index.adoc

@@ -10,7 +10,7 @@ link:https://awesome.re[image:https://awesome.re/badge.svg[Awesome]]
 
 > A curated, categorized table of awesome¹ open source projects. 
 
-link:https://commons.wikimedia.org/wiki/File:121212_2_OpenSwissKnife.png[image:https://upload.wikimedia.org/wikipedia/commons/thumb/c/c7/121212_2_OpenSwissKnife.png/800px-121212_2_OpenSwissKnife.png[OpenSourceSwissKnife]]
+link:https://commons.wikimedia.org/wiki/File:121212_2_OpenSwissKnife.png[image:https://thumb.wikimedia.org/wikipedia/commons/thumb/c/c7/121212_2_OpenSwissKnife.png/1280px-121212_2_OpenSwissKnife.png[OpenSourceSwissKnife]]
 
 toc::[]