tweak: projectile: don't follow symlinks by default

Experienced users (the type to use symlinks in their projects) can add
-L back to `projectile-git-fd-args`, otherwise, its poorer UX for
beginners if Projectile indexes symlinked build artifacts (like 'result'
symlinks by Nix); i.e. things they didn't symlink themselves.

Fix: #7781

lisp/doom-projects.el

@@ -183,7 +183,7 @@ And if it's a function, evaluate it."
   (put 'projectile-git-submodule-command 'initial-value projectile-git-submodule-command)
   (setq projectile-git-submodule-command nil
         ;; Include and follow symlinks in file listings.
-        projectile-git-fd-args (concat "-L -tl " projectile-git-fd-args)
+        projectile-git-fd-args (concat "-tl " projectile-git-fd-args)
         projectile-indexing-method 'hybrid
         projectile-generic-command
         (lambda (_)