Update Resources/doc/reference/installation.rst

A few small grammatical fixes.
Update Resources/doc/reference/installation.rst

More than one bundle here, so fixed wording.
Update Resources/doc/reference/getting_started.rst

Fix typo (s/servise/service)
Merge pull request #1188 from danfinnie/patch-1

Update Resources/doc/reference/getting_started.rst
Merge pull request #1185 from catchamonkey/patch-1

Update Resources/doc/reference/installation.rst