add solid to router docs dropdown

Author: birkskyum

app/libraries/router.tsx

@@ -33,7 +33,7 @@ export const routerProject = {
   colorFrom: 'from-emerald-500',
   colorTo: 'to-lime-600',
   textColor: textStyles,
-  frameworks: ['react'],
+  frameworks: ['react', 'solid'],
   scarfId: '3d14fff2-f326-4929-b5e1-6ecf953d24f4',
   defaultDocs: 'framework/react/overview',
   hideCodesandboxUrl: true,