updated glyph number README

Author: chrissimpkins

README.md

@@ -40,7 +40,7 @@ The font binaries are released under a license that permits unlimited print, des
 - **Typeface Name**: Hack
 - **Category**: Monospaced
 - **Powerline Support**: Yes
-- **Glyph Number**: 1559
+- **Glyph Number**: 1561
 - **Included Styles**: Regular, Bold, Italic, Bold Italic