adhere to changelog syntax specification

OBS-URL: https://build.opensuse.org/package/show/multimedia:libs/ffmpeg-5?expand=0&rev=8

ffmpeg-5.spec

@@ -98,12 +98,12 @@ URL:            https://ffmpeg.org/
 
 #Freshcode-URL:    http://freshcode.club/projects/ffmpeg
 #Git-Clone:     git://source.ffmpeg.org/ffmpeg
-Source0:        https://www.ffmpeg.org/releases/%_name-%version.tar.xz
-Source1:        ffmpeg-dlopen-headers.tar.xz
+Source:         https://www.ffmpeg.org/releases/%_name-%version.tar.xz
 Source2:        https://www.ffmpeg.org/releases/%_name-%version.tar.xz.asc
 Source3:        %name-rpmlintrc
 Source4:        enable_decoders
 Source5:        enable_encoders
+Source6:        ffmpeg-dlopen-headers.tar.xz
 Source92:       ffmpeg_get_dlopen_headers.sh
 Source98:       http://ffmpeg.org/ffmpeg-devel.asc#/ffmpeg-5.keyring
 Source99:       baselibs.conf
@@ -549,7 +549,7 @@ from libav should depend on these private headers which are expected to
 break compatibility without any notice.
 
 %prep
-%autosetup -a1 -p1 -n %{_name}-%{version}
+%autosetup -a6 -p1 -n %_name-%version
 
 %build
 %ifarch %ix86 %arm