Replaced the Sourceforge link in various places with a Savannah link.

data/credits.txt

@@ -65,4 +65,4 @@
 020 Copyright 2003 Parallel Realities
 020 Copyright 2012 Guus Sliepen, Astrid S. de Wijn and others
 020 Copyright 2015 Julian Marchant
-120 http://sourceforge.net/projects/pr-starfighter/
+120 starfighter.nongnu.org

docs/index.html

@@ -404,7 +404,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
     <tr>
       <td><img src="superCharge.png" alt="Super Charge"></td>
-      <td><b>Super Charge</b> - Three / Five way spread, full power and cooling (rare).</td>
+      <td><b>Super Charge</b> - Five way spread, massive power and cooling (rare).</td>
     </tr>
   </table>
 
@@ -444,6 +444,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
   <p>Created using the <a href="http://www.libsdl.org">SDL
   library</a>.</p>
 
-  <p align="right"><a href="http://sourceforge.net/projects/pr-starfighter/">http://sourceforge.net/projects/pr-starfighter/</a></p>
+  <p align="right"><a href="http://starfighter.nongnu.org">http://starfighter.nongnu.org</a></p>
 </body>
 </html>

src/Starfighter.cpp

@@ -44,7 +44,7 @@ int main(int argc, char **argv)
 			printf("Additional Commands\n");
 			printf("\t-noaudio     Disables sound and music\n");
 			printf("\t-mono        Mono sound output (best for headphones)\n\n");
-			printf("http://sourceforge.net/projects/pr-starfighter/\n");
+			printf("http://starfighter.nongnu.org\n");
 			printf("\n");
 			exit(0);
 		}