Fix repeating date in GSoC ideas list
diff --git a/DocumentationByCategory.md b/DocumentationByCategory.md
index 1010ad5..540667d 100644
--- a/DocumentationByCategory.md
+++ b/DocumentationByCategory.md
@@ -29,10 +29,10 @@
   * [GanetiFAQ](GanetiFAQ.md): Answers to the most frequently asked questions about Ganeti.
   * [Publications](Publications.md): Publications of the Ganeti project on conferences/in journals/etc.
   * [SummerOfCode2013Ideas](SummerOfCode2013Ideas.md): Ideas for Google Summer of Code 2013.
-  * [SummerOfCode2014Ideas](SummerOfCode2014Ideas.md): Ideas for Google Summer of Code 2013.
-  * [SummerOfCode2015Ideas](SummerOfCode2015Ideas.md): Ideas for Google Summer of Code 2013.
-  * [SummerOfCode2016Ideas](SummerOfCode2016Ideas.md): Ideas for Google Summer of Code 2013.
+  * [SummerOfCode2014Ideas](SummerOfCode2014Ideas.md): Ideas for Google Summer of Code 2014.
+  * [SummerOfCode2015Ideas](SummerOfCode2015Ideas.md): Ideas for Google Summer of Code 2015.
+  * [SummerOfCode2016Ideas](SummerOfCode2016Ideas.md): Ideas for Google Summer of Code 2016.
 
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-[Alphabetical index of documentation](.)
\ No newline at end of file
+[Alphabetical index of documentation](.)