Fix Gist description when repository count is undefined

Author: shati-patel

extensions/ql-vscode/src/remote-queries/export-results.ts

@@ -110,8 +110,8 @@ export async function exportResultsToGist(
 const buildGistDescription = (query: RemoteQuery, analysesResults: AnalysisResults[]) => {
   const resultCount = sumAnalysesResults(analysesResults);
   const resultLabel = pluralize(resultCount, 'result', 'results');
-  const repositoryLabel = pluralize(query.repositoryCount, 'repository', 'repositories');
-  return `${query.queryName} (${query.language}) ${resultLabel} (${repositoryLabel})`;
+  const repositoryLabel = query.repositoryCount ? `(${pluralize(query.repositoryCount, 'repository', 'repositories')})` : '';
+  return `${query.queryName} (${query.language}) ${resultLabel} ${repositoryLabel}`;
 };
 
 /**