Squashing 3 small changes, mostly grammatical fixes, sentence structure, and trailing whitespace

Combining two sentences in ch41 and clarifying risk, removing commas in ch41, and changing structure of sentence in ch4, remvoed trailing whitespace

Closes-Bug: #1342331
Closes-Bug: #1342328
Closes-Bug: #1342343

Change-Id: I041c1b640e703f8e198c26ca4c5c7235ad344c48
Merge "Squashing 3 small changes, mostly grammatical fixes, sentence structure, and trailing whitespace"