[FAB-10531] BYFN - consistency for better clarity

Change "start your network:" to "start our network:"
to match previous "We will leverage a script to spin up our network."

Change-Id: Iee98d4119520e326dd8b66c64e3694027c54ffd4
Signed-off-by: Haibo Xi <haibbo@gmail.com>

Author: haibbo

docs/source/build_network.rst

@@ -498,7 +498,7 @@ and bootstraps the orderer with our previously generated ``genesis.block``.
 We want to go through the commands manually in order to expose the
 syntax and functionality of each call.
 
-First let's start your network:
+First let's start our network:
 
 .. code:: bash