fix doc

Author: magiclen

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "image-convert"
-version = "0.20.0"
+version = "0.20.1"
 authors = ["Magic Len <len@magiclen.org>"]
 edition = "2021"
 rust-version = "1.70"

README.md

@@ -46,7 +46,7 @@ let mut output = ImageResource::from_path(target_image_path);
 to_png(&mut output, &input, &config).unwrap();
 ```
 
-Supported output formats are `BMP`, `JPG`, `PNG`, `GIF`, `WEBP`, `ICO`, `PGM` and `GrayRaw`.
+Supported output formats are `BMP`, `JPG`, `PNG`, `GIF`, `TIFF`, `WEBP`, `ICO`, `PGM` and `GrayRaw`.
 
 ## Crates.io
 

src/lib.rs

@@ -44,7 +44,7 @@ let mut output = ImageResource::from_path(target_image_path);
 to_png(&mut output, &input, &config).unwrap();
 ```
 
-Supported output formats are `BMP`, `JPG`, `PNG`, `GIF`, `WEBP`, `ICO`, `PGM` and `GrayRaw`.
+Supported output formats are `BMP`, `JPG`, `PNG`, `GIF`, `TIFF`, `WEBP`, `ICO`, `PGM` and `GrayRaw`.
 */
 
 pub extern crate magick_rust;