Fix some typos

init.el

@@ -427,7 +427,7 @@ visual states."
 (use-package eldoc
   :diminish eldoc-mode
   :init
-  (set eldoc-echo-area-use-multiline-p nil))
+  (setq-default eldoc-echo-area-use-multiline-p nil))
 
 ;; dumb-jump
 (use-package dumb-jump
@@ -554,7 +554,7 @@ visual states."
              (default-directory (project-root proj))
              (eshell-buffer-name
               (concat "*eshell for project " default-directory "*")))
-        (eshell)))
+        (eshell arg)))
   (defun my/project-eshell-or-default (&optional arg)
     "Open an eshell for the current project, otherwise, open a normal eshell."
     (interactive "P")