Change gitter references -> Discord

.github/ISSUE_TEMPLATE/question.md

@@ -7,4 +7,4 @@ assignees: ''
 
 ---
 
-Please ask your questions at https://gitter.im/emacs-lsp/lsp-mode
+Please ask your questions at https://discord.gg/swuxy5AAgT

CONTRIBUTING.md

@@ -3,7 +3,7 @@
 `emacs-lsp` is a very active organization so before you start working on 
 a feature/issue make sure that there is a corresponding issue and drop a 
 note that you start working on that to avoid collisions. 
-Feel free to ping the maintainers in [Gitter](https://gitter.im/emacs-lsp/lsp-mode) 
+Feel free to ping the maintainers in [Discord](https://discord.gg/Wrqrf42f2h) 
 chat or in the issue report if you need help/clarification on how things work.
 
 If you discover issues, have ideas for improvements or new features,

README.md

@@ -5,7 +5,7 @@ description: Language Server Protocol support with multiples languages support f
 
 [![](https://melpa.org/packages/lsp-mode-badge.svg)](https://melpa.org/#/lsp-mode)
 [![](https://stable.melpa.org/packages/lsp-mode-badge.svg)](https://stable.melpa.org/#/lsp-mode)
-[![](https://badges.gitter.im/emacs-lsp/lsp-mode.svg)](https://gitter.im/emacs-lsp/lsp-mode)
+[![](https://discordapp.com/api/guilds/789885435026604033/widget.png?style=shield)](https://discord.gg/swuxy5AAgT)
 [![](https://github.com/emacs-lsp/lsp-mode/workflows/CI/badge.svg)](https://github.com/emacs-lsp/lsp-mode/actions?query=workflow%3ACI)
 
 

mkdocs.yml

@@ -134,8 +134,8 @@ extra:
       link: https://github.com/emacs-lsp/lsp-mode
     - icon: fontawesome/brands/twitter
       link: https://twitter.com/yonchovski
-    - icon: fontawesome/brands/gitter
-      link: https://gitter.im/emacs-lsp/lsp-mode
+    - icon: fontawesome/brands/discord
+      link: https://discord.gg/swuxy5AAgT
 
 repo_name: emacs-lsp/lsp-mode
 repo_url: https://github.com/emacs-lsp/lsp-mode