fixed indent in README

README.md

@@ -33,7 +33,7 @@ works as follows:
 - Each row is represented as a single line of text.
 - Cells are separated by tab characters.
 - Certain special characters within the cells are substituted for other values as follows:
-- Newlines become `~n`.
+  - Newlines become `~n`.
   - Carriage returns become `~r`.
   - Tabs become `~t`.
   - Tildes (`~`) become `~!`.