message: Fix typo in GitHub token error.
diff: @@ -91,7 +91,7 @@ export async function connectToGitHub(node: AzureTreeItem, client: SiteClient, c
  }
  async function showGitHubAuthPrompt(node: AzureTreeItem, client: SiteClient, context: IActionContext): Promise<void> {
  - const invalidToken: string = localize('tokenExpired', 'Azure\'s GitHub token in invalid. Authorize in the "Deployment Center"');
  + const invalidToken: string = localize('tokenExpired', 'Azure\'s GitHub token is invalid. Authorize in the "Deployment Center"');
  const goToPortal: vscode.MessageItem = { title: localize('goToPortal', 'Go to Portal') };
  let input: vscode.MessageItem | undefined = DialogResponses.learnMore;
  while (input === DialogResponses.learnMore) {
  