fix eclipse version

Change-Id: I2f56b015b9ca0dcd79334c3404790f3e19702726
Signed-off-by: Carsten Hammer <carsten.hammer@t-online.de>

bundles/org.eclipse.jdt.doc.isv/reference/misc/overview-jdt.html

@@ -13,7 +13,7 @@ <h1>JDT Overview - Map of JDT Plug-ins</h1>
   environment. </p>
 <p>The Java development tooling itself is divided up into a number of separate
   plug-ins. The following table shows which API packages are found in which plug-ins as of
-Eclipse 3.8. This table is useful
+Eclipse 4.18. This table is useful
   for determining which plug-ins a given plug-in should include as prerequisites.
 </p>
 <table border="1" width="80%" align="center">