Update lsp/gitlab_duo.lua

Co-authored-by: Justin M. Keyes <[email protected]>

Author: tachyons

lsp/gitlab_duo.lua

@@ -7,7 +7,7 @@
 --- The GitLab LSP enables any editor or IDE to integrate with GitLab Duo
 --- for AI-powered code suggestions via the Language Server Protocol.
 ---
---- **Prerequisites:**
+--- Prerequisites:
 --- - Node.js and npm installed
 --- - GitLab account with Duo Pro license
 --- - Internet connection for OAuth device flow