Update boostrap.sh for test network

Co-Authored-By: Waleed Mortaja <waleedmortaja@protonmail.com>
Signed-off-by: Nikhil Gupta <ngupta@symbridge.com>
Signed-off-by: Ry Jones <ry@linux.com>
(cherry picked from commit e4b66f9)

scripts/bootstrap.sh

@@ -49,7 +49,7 @@ dockerPull() {
 cloneSamplesRepo() {
     # clone (if needed) hyperledger/fabric-samples and checkout corresponding
     # version to the binaries and docker images to be downloaded
-    if [ -d first-network ]; then
+    if [ -d test-network ]; then
         # if we are in the fabric-samples repo, checkout corresponding version
         echo "===> Checking out v${VERSION} of hyperledger/fabric-samples"
         git checkout v${VERSION}