SAN JOSE, Calif. — Sharks president Jonathan Becher joked that his phone was already buzzing with interested parties Thursday after Doug Wilson announced he was stepping down as the team’s general manager. The Sharks are about to undertake their first general manager search in close to two decades after Wilson, who had been on medical leave, announced he was parting ways with the organization to focus on his well-being. Wilson, 64, had been away from the team since late November for undisclosed health reasons. Becher, interim general manager Joe Will and owner Hasso Plattner will lead the sear…