Removed duplicate download link for git.

src/docs/asciidoc/jme3/build_from_sources.adoc

@@ -17,7 +17,7 @@ Please understand that this tutorial gives you access to the latest development
 
 Here is the basic outline of our goal:
 
-.  Install git client - link:https://git-scm.com/downloads[https://git-scm.com/downloads]
+.  Install git client.
 .  Download jMonkeyEngine using git-client.
 .  Update jMonkeyEngine using git-client.
 .  Build jMonkeyEngine locally using gradle.