update shell output to console lexer

This is a follow-up to 3275991. All shell output that were not updated
with that commit get updated with this pull request.

Please close this if those `[source,shell]` were unchanged on purpose.
Use always "SHA-1" instead of "SHA"

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Remove dangling full stop

Signed-off-by: Thomas Ackermann <th.acker@arcor.de>
Fixed typo: "walk through," not "walk though."
Merge pull request #208 from dtikhonov/master

Fixed typo: "walk through," not "walk though."
Fix a typo in "contributing" section of chapter 6
Merge pull request #209 from MasoodFallahpoor/ch06-typo-fix

Fix a typo in "contributing" section of chapter 6
fix branch name to distinguish from directory
Merge pull request #211 from tschady/tws/fix-branch-name

fix branch name in example
Avoid first-person singular pronouns where appropriate

This is a subjective style change; however, in the surrounding text "we/us" is more commonly used.
Merge pull request #213 from rdwampler/avoid-singular-pronouns

Avoid first-person singular pronouns where appropriate
Merge pull request #204 from harupong/fix-source-markup

update shell output to console lexer
Merge pull request #199 from tacker66/sha-1

Sha-1
Update kindlegen version to 2.9.4

See https://github.com/tdtds/kindlegen/issues/12 for more details.
Grammar fix: setup is not a verb.
Merge pull request #218 from dtikhonov/setup

Grammar fix: setup is not a verb.
Merge pull request #215 from cdwilson/update-kindlegen-version

Update kindlegen version to 2.9.4
"gitt" -> "git"