fix: correctly delete labels

src/api.ts

@@ -193,11 +193,8 @@ export class Api {
    */
   public deleteLabel(projectId: number, name: string): Promise<void> {
     return this.makeGitLabAPIRequest(
-      'projects/' + projectId + '/labels',
+      `projects/${projectId}/labels?name=${name}`,
       {
-        data: {
-          name: name,
-        },
         method: 'DELETE',
       },
     );