One thing was important for Steve Jones to emphasise before the start of “Pistol”. “It’s not a documentary,” the founder and guitarist of the Sex Pistols says. The six-part series about the world’s most notorious band, which is now available on the streaming service Disney+, is based on Jones’ autobiography. “It’s a story,” Jones tells dpa. “It’s my story.” The Sex Pistols released only one studio album – “Never Mind the Bollocks, Here’s The Sex Pistols” – yet are still considered one of the most influential groups in music history. “Pistol” tells the turbulent story of the punk band’s rise an…