process.c: [DOC] improve docs for Process.groups

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65039 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

process.c

@@ -6164,20 +6164,20 @@ maxgroups(void)
  *  call-seq:
  *     Process.groups   -> array
  *
- *  Get an <code>Array</code> of the gids of groups in the
+ *  Get an <code>Array</code> of the group IDs in the
  *  supplemental group access list for this process.
  *
  *     Process.groups   #=> [27, 6, 10, 11]
  *
  *  Note that this method is just a wrapper of getgroups(2).
  *  This means that the following characteristics of
- *  the results are completely depends on your system:
+ *  the result completely depend on your system:
  *
  *  - the result is sorted
  *  - the result includes effective GIDs
  *  - the result does not include duplicated GIDs
  *
- *  You can certainly get a sorted unique GID list of
+ *  You can make sure to get a sorted unique GID list of
  *  the current process by this expression:
  *
  *     Process.groups.uniq.sort