Fix a couple errors in doom.cmd

- Properly stringize the optional first argument
- Use correct path to init.el (relative to script directory)

bin/doom.cmd

@@ -3,11 +3,11 @@
 @ECHO OFF
 PUSHD "%~dp0" >NUL
 
-IF %1=="run" (
+IF "%1"=="run" (
    SHIFT
-   emacs -Q %* -l init.el -f "doom|run-all-startup-hooks"
+   emacs -Q %* -l ..\init.el -f "doom|run-all-startup-hooks"
 ) ELSE (
-   emacs --quick --script ./doom -- %*
+   emacs --quick --script .\doom -- %*
 )
 
 POPD >NUL