Update README.md (#255)

Clarify 'long' to 'longer'. Pedantic, 50% more bloat in characters but correct.

README.md

@@ -81,7 +81,7 @@ To give you an example of the interface, here's an idea:
 
 - `isync`/`mbsync` has replaced `offlineimap` as the backend. Offlineimap was error-prone, bloated, used obsolete Python 2 modules and required separate steps to install the system.
 - `mw` is now an installed program instead of just a script needed to be kept in your mutt folder.
-- `dialog` is no long used (le bloat) and the interface is simply text commands.
+- `dialog` is no longer used (le bloat) and the interface is simply text commands.
 - More autogenerated shortcuts that allow quickly moving and copying mail between boxes.
 - More elegant attachment handling. Image/video/pdf attachments without relying on the neomutt instance.
 - abook integration by default.