Replace mentions of WikEmacs with EmacsWiki

README.md

@@ -577,12 +577,10 @@ time. This situation will probably improve over time.
 
 ## Share the knowledge
 
-[WikEmacs](http://wikemacs.org) collects useful resources for working
+[EmacsWiki](http://emacswiki.org) collects useful resources for working
 with GNU Emacs. Please, take the time to peruse and improve them as
 you accumulate knowledge about Emacs. Prelude makes this especially
 easy, since it bundles
-[MediaWiki support](http://wikemacs.org/wiki/Mediawiki.el) + the
-settings required to access WikEmacs right away.
 
 ## Known issues
 

core/prelude-core.el

@@ -423,7 +423,7 @@ Doesn't mess with special buffers."
     "Press <f12> to toggle the menu bar."
     "Explore the Tools->Prelude menu to find out about some of Prelude extensions to Emacs."
     "Access the official Emacs manual by pressing <C-h r>."
-    "Visit WikEmacs at http://wikemacs.org to find out even more about Emacs."))
+    "Visit the EmacsWiki at http://emacswiki.org to find out even more about Emacs."))
 
 (defun prelude-tip-of-the-day ()
   "Display a random entry from `prelude-tips'."