Fix doc comment

Author: svetli-n

git-date/src/time/mod.rs

@@ -27,7 +27,7 @@ pub enum Sign {
 pub enum Format<'a> {
     /// A custom format typically defined with the [`format_description`][time::format_description] macro.
     Custom(&'a [time::format_description::FormatItem<'a>]),
-    /// The seconds since 1970, also known as unix epoch, like `1660874655 +0800`.
+    /// The seconds since 1970, also known as unix epoch, like `1660874655`.
     Unix,
     /// The seconds since 1970, followed by the offset, like `1660874655 +0800`
     Raw,