doc: fix typo
(cherry picked from commit b3daefcf0321cd2d175b3c70863985c8fe2653cb)
doc: update octaverc info for os x
(cherry picked from commit a5194b4f5e7ebba2dc17eff976d8fa4bc9b774fc)
doc: fix typo
(cherry picked from commit 710fb9e225c6e9be1a2982071c6d653c2ee2eda4)