small change to doc

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "img2ascii"
-version = "0.1.0"
+version = "1.0.0"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

src/cli.rs

@@ -34,8 +34,6 @@ pub struct Cli {
     #[arg(short = 'f', long)]
     pub full: bool,
     /// use a custom threshold when converting to braille
-    ///
-    /// default is 128
     #[arg(default_value_t = 128, long)]
     pub threshold: u8,
     /// use a custom character map for output