Reference professional.wiki documentation page (#139)

Author: JeroenDeDauw

extension.json

@@ -5,7 +5,7 @@
 	"version": "2.0.0",
 
 	"author": [
-		"[https://Professional.Wiki/ Professional.Wiki]",
+		"[https://Professional.Wiki/ Professional Wiki]",
 		"[https://www.EntropyWins.wtf/mediawiki Jeroen De Dauw]"
 	],