Add RPM .spec %generate_buildrequires section name
%generate_buildrequires
is a valid .spec section name.
See for example: https://src.fedoraproject.org/rpms/rust-os_str_bytes/blob/29ed6fa27dca9e793fa359a80cc5e2cb5d96ec0b/f/rust-os_str_bytes.spec#_103