Keep using the separate link specification syntax to minimize changes…

… to documentation

src/encoder.rs

@@ -394,7 +394,7 @@ impl<'a, W: Write> Encoder<'a, W> {
     /// at the end of the delay (before rendering the next frame)
     ///
     /// *Note that this parameter can be set for each individual frame after
-    /// [`write_header`](Self::write_header) is called (see [`Writer::set_dispose_op`])*
+    /// [`write_header`] is called (see [`Writer::set_dispose_op`])*
     ///
     /// See the [`DisposeOp`] documentation for the possible values and their effects.
     ///
@@ -404,7 +404,10 @@ impl<'a, W: Write> Encoder<'a, W> {
     /// The default value is [`DisposeOp::None`].
     ///
     /// This method will return an error if the image is not animated.
-    /// (see [`set_animated`](Self::set_animated))
+    /// (see [`set_animated`])
+    ///
+    /// [`set_animated`]: Self::set_animated
+    /// [`write_header`]: Self::write_header
     pub fn set_dispose_op(&mut self, op: DisposeOp) -> Result<()> {
         if let Some(ref mut fctl) = self.info.frame_control {
             fctl.dispose_op = op;