Replace _ with unit in the wit format document (#226)

ramnivas · web-flow · commit 57698e6f1b6f · 2022-05-31T09:24:07.000-05:00
diff --git a/WIT.md b/WIT.md
@@ -105,7 +105,7 @@ keyword ::= 'use'
           | 'option'
           | 'list'
           | 'expected'
-          | '_'
+          | 'unit'
           | 'as'
           | 'from'
           | 'static'
