Fix wording

copy.go

@@ -14,7 +14,7 @@ const (
 	tmpPermissionForDirectory = os.FileMode(0755)
 )
 
-// Copy copies src to dest, doesn't matter if src is a directory or a file
+// Copy copies src to dest, doesn't matter if src is a directory or a file.
 func Copy(src, dest string, opt ...Options) error {
 	info, err := os.Lstat(src)
 	if err != nil {
@@ -134,15 +134,17 @@ func lcopy(src, dest string) error {
 }
 
 // fclose ANYHOW closes file,
-// with asiging error occured BUT respecting the error already reported.
+// with asiging error raised during Close,
+// BUT respecting the error already reported.
 func fclose(f *os.File, reported *error) {
 	if err := f.Close(); *reported == nil {
 		*reported = err
 	}
 }
 
 // chmod ANYHOW changes file mode,
-// with asiging error occured BUT respecting the error already reported.
+// with asiging error raised during Chmod,
+// BUT respecting the error already reported.
 func chmod(dir string, mode os.FileMode, reported *error) {
 	if err := os.Chmod(dir, mode); *reported == nil {
 		*reported = err