Fix documentation for downloading Gerrit

Link was broken, fixed to working and newer version.

Change-Id: Ic976d4dccedb38794fbb7bd2fe8e8bbdcbb8473e

Documentation/linux-quickstart.txt

diff --git a/Documentation/linux-quickstart.txt b/Documentation/linux-quickstart.txt
index c2dcedb..0d8848e 100644
--- a/Documentation/linux-quickstart.txt
+++ b/Documentation/linux-quickstart.txt
@@ -29,10 +29,10 @@
 . Download the desired Gerrit archive.
 
 To view previous archives, see
-link:https://gerrit-releases.storage.googleapis.com/index.html[Gerrit Code Review: Releases]. The steps below install Gerrit 2.15.1:
+link:https://gerrit-releases.storage.googleapis.com/index.html[Gerrit Code Review: Releases]. The steps below install Gerrit 3.0.3:
 
 ....
-wget https://www.gerritcodereview.com/download/gerrit-2.15.1.war
+wget https://gerrit-releases.storage.googleapis.com/gerrit-3.0.3.war
 ....
 
 NOTE: To build and install Gerrit from the source files, see