Add deprecated plot functions back to pkgdown reference

Author: mitchelloharawild

_pkgdown.yml

@@ -133,6 +133,12 @@ reference:
     Graphics capabilities in feasts have moved to the [ggtime](https://pkg.mitchelloharawild.com/ggtime) package.
 
     Please use `library(ggtime)` in your code in order to continue using the `autoplot()` and `autolayer()` functions previously provided by this package.
+  contents:
+    - autoplot.tbl_ts
+    - autolayer.tbl_ts
+    - autoplot.fbl_ts
+    - autolayer.fbl_ts
+    - autoplot.dcmp_ts
 
 - title: Extension package helpers
   desc: >