[FAB-8087] Remove reference to private repo

One of the tests includes a reference to a private repo clone of
hyperledger fabric on jyellick's github account.  I hear this guy is
notoriously unreliable, so fixed to point to the upstream repo.

Change-Id: I31ac0a73b630e630b16f1efb1990e1d4a3b46fce
Signed-off-by: Jason Yellick <jyellick@us.ibm.com>

test/integration/configtxlator.js

@@ -18,7 +18,7 @@
 /*
  *   This test case requires that the 'configtxlator' tool be running locally and on port 7059
  *   see:
- *   https://github.com/jyellick/fabric-gerrit/tree/configtxlator/examples/configtxupdate
+ *   https://github.com/hyperledger/fabric/tree/master/examples/configtxupdate
  *
  *   This test case also requires two node packages to make it easier to make REST calls to
  *   the 'configtxlator'