Summary:
Define return values as part of @return.
Clarify that the returned list of files are gnuplot filenames specifically.
Cleanup grammar throughout.
Reviewers: zmike, devilhorns
Reviewed By: devilhorns
Subscribers: cedric, #committers
Tags: #efl
Differential Revision: https://phab.enlightenment.org/D6502
Summary: I had fixed some typos and some wrong expressions, such as capital letters, singular, and orders of groups in Eina API reference doxygen.
Test Plan: Doxygen Revision
Reviewers: stefan, cedric, raster, Jaehyun_Cho, jpeg
Reviewed By: jpeg
Subscribers: conr2d
Differential Revision: https://phab.enlightenment.org/D4674