The Septuagint reads:
ἠλάττωσας αὐτὸν βραχύ τι
παρ᾿ ἀγγέλους, δόξῃ καὶ τιμῇ ἐστεφάνωσας αὐτόν·
The emboldened text above is
par aggelos, whence the term "angels".
Most importantly, the quotation and use of
Psalm 8:5 in
Hebrews 2:7 uses παρ αγγελους, or
par aggelos, a clear quotation from the Septuagint. This then is the Apostolic interpretation of the text in
Psalm 8:5.