Updated ubuntu installation instructions.

Author: tbrehm

INSTALL_UBUNTU_8.04.txt

@@ -251,7 +251,7 @@ There are two possile scenarios a) or b), but not both:
 a) Installation of beta 3
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 cd /tmp
-wget http://www.ispconfig.org/downloads/ISPConfig_3.0.0.8-rc1.tar.gz
+wget http://www.ispconfig.org/downloads/ISPConfig-3.0.0.8-rc1.tar.gz
 tar xvfz ISPConfig_3.0.0.8-rc1.tar.gz
 cd ispconfig3_install/install/
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