Fix the delete suggestion button not working and using a deprecated endpoint (#34396)

app/javascript/mastodon/api/suggestions.ts

@@ -5,4 +5,4 @@ export const apiGetSuggestions = (limit: number) =>
   apiRequestGet<ApiSuggestionJSON[]>('v2/suggestions', { limit });
 
 export const apiDeleteSuggestion = (accountId: string) =>
-  apiRequestDelete(`v1/suggestions/${accountId}`);
+  apiRequestDelete(`v2/suggestions/${accountId}`);