message: Only handle double }} when autoClosingBrackets is on
diff: @@ -150,9 +150,10 @@ export class Environment implements IProvider {
  if (snippetType === EnvSnippetType.ForBegin) {
  // If a closing '}' after '\begin{' has already been inserted, we need to remove it as it is already included in the snippets
  + const autoClosing = vscode.workspace.getConfiguration('editor').get('autoClosingBrackets') as string
  const line = args.document.lineAt(args.position).text
  const word = line.slice(line.lastIndexOf('\\', args.position.character), args.position.character + 2)
  - if (word.match(/\\begin{[a-zA-Z]*}/)) {
  + if (autoClosing !== 'never' && word.match(/\\begin{[a-zA-Z]*}/)) {
  const rangeBegin = line.lastIndexOf('{', args.position.character) + 1
  const snippetRange = new vscode.Range(args.position.line, rangeBegin, args.position.line, args.position.character + 1)
  suggestions.forEach(c => {c.range = snippetRange} )
  