corrected command for colorful git output

Author: rogerdudler

index.html

@@ -165,7 +165,7 @@ <h2>useful hints</h2>
             built-in git GUI<br />
             <code>gitk</code><br />
             use colorful git output<br />
-            <code>git config color.ui</code><br />
+            <code>git config color.ui true</code><br />
             show log on just one line per commit<br />
             <code>git config format.pretty oneline</code><br />
             use interactive adding<br />