Replace some old wikipedia interwiki links.

See #17 for updating all the legacy interwiki links.

Author: peterjc

wiki/SourceCode.md

@@ -34,7 +34,7 @@ github](http://github.com/biopython/biopython).
 ### Track changes
 
 You can [track changes](Tracking_commits "wikilink") via
-[RSS](wp:RSS_(file_format) "wikilink").
+[RSS](https://en.wikipedia.org/wiki/RSS).
 
 ### Downloading the latest source
 

wiki/Tracking_commits.md

@@ -7,8 +7,8 @@ redirect_from:
 ---
 
 You can track code development in Biopython by [RSS
-feeds](wp:RSS_(file_format) "wikilink") or the biopython-dev [Mailing
-list](Mailing_lists "wikilink").
+feeds](https://en.wikipedia.org/wiki/RSS) or the biopython-dev
+[Mailing list](Mailing_lists "wikilink").
 
 | Core commits                                                                            |
 |-----------------------------------------------------------------------------------------|