core: qlogo: optimize size

packages/hydrooj/src/lib/avatar.ts

@@ -4,7 +4,7 @@ type AvatarProvider = (src: string, size: number) => string;
 
 export const providers: Record<string, AvatarProvider> = {
     gravatar: (email, size) => `//cn.gravatar.com/avatar/${md5((email || '').toString().trim().toLowerCase())}?d=mm&s=${size || 32}`,
-    qq: (id) => `//q1.qlogo.cn/g?b=qq&nk=${(/(\d+)/g.exec(id) || ['', ''])[1]}&s=640`,
+    qq: (id) => `//q1.qlogo.cn/g?b=qq&nk=${(/(\d+)/g.exec(id) || ['', ''])[1]}&s=160`,
     github: (id, size) => `//github.com/${id}.png?size=${Math.min(size, 460)}`,
     url: (url) => url,
 };