Networking Guide: Subjective Edits

Editing chapters of the Networking Guide to address repetition of
words in some sentences, add punctuation, and correct passive voice
when it prevents clarity in a sentence.

implements bp create-networking-guide

Change-Id: Ibebf5b553571e84d1154d5089bd3f0dd9de5455e
Merge "Networking Guide: Subjective Edits"