Merge pull request #3174 from Alhadis/emacs-lisp

Use a dedicated grammar for Emacs Lisp highlighting

lib/linguist/languages.yml

@@ -1027,7 +1027,7 @@ Elm:
 
 Emacs Lisp:
   type: programming
-  tm_scope: source.lisp
+  tm_scope: source.emacs.lisp
   color: "#c065db"
   aliases:
   - elisp
@@ -1035,6 +1035,7 @@ Emacs Lisp:
   filenames:
   - .emacs
   - .emacs.desktop
+  - .spacemacs
   extensions:
   - .el
   - .emacs