Update docs to account for the latest char => char32_t change.

emilio · emilio · commit 9b7bb8f1b6c6 · 2019-12-04T00:58:54.000+01:00
diff --git a/docs.md b/docs.md
@@ -140,7 +140,7 @@ cbindgen contains the following hardcoded mappings (again completely ignoring na
 ## std types
 
 * bool => bool
-* char => char32_t
+* char => uint32_t
 * u8 => uint8_t
 * u16 => uint16_t
 * u32 => uint32_t
