[doc] Update documentation

* depedency --> dependency
* github --> GitHub
* pypi --> PyPI
** See https://pypi.org/
* circleci --> CircleCI
** See https://circleci.com/docs/
* appveyor --> AppVeyor
** See https://www.appveyor.com/docs/
* travis --> Travis
** See https://travis-ci.org/
* svn --> SVN
** See https://en.wikipedia.org/wiki/Apache_Subversion
* git --> Git
** See https://en.wikipedia.org/wiki/Git

Change-Id: I7273855254de11403c8be73eb6d910f3a2ea5d8f