Update changelog for vscode PR 101

Author: axelson

CHANGELOG.md

@@ -39,6 +39,7 @@ VSCode:
 - Migrate generated tasks.json to 2.0.0 syntax (thanks [Dusty Pomerleau](https://github.com/dustypomerleau)) [#71](https://github.com/elixir-lsp/vscode-elixir-ls/pull/71)
 - Improve development instructions (thanks [Tan Jay Jun](https://github.com/jayjun)) [#97](https://github.com/elixir-lsp/vscode-elixir-ls/pull/97)
 - Activate extension whenever workspace contains elixir files (thanks [Jason Axelson](https://github.com/axelson)) [#107](https://github.com/elixir-lsp/vscode-elixir-ls/pull/107)
+- Make heredocs and most sigils auto-close when used with quotes and triple quotes (thanks [Jarrod Davis](https://github.com/jarrodldavis)) [#101](https://github.com/elixir-lsp/vscode-elixir-ls/pull/101)
 
 ### v0.4.0: 16 May 2020