[emacs] Upgrade to roam2

emacs/.config/doom/init.el

@@ -153,7 +153,7 @@
         +ipython           ; ipython support for babel
         +journal
         +pretty
-        +roam
+        +roam2
         +pandoc            ; pandoc integration into org's exporter
         +pomodoro
         +present)          ; using Emacs for presentations