docs: fix hilbish.vimAction doc

docs/hooks/hilbish.md

@@ -43,5 +43,29 @@ The notification. The properties are defined in the link above.
 
 <hr>
 
-+ `hilbish.vimAction` -> actionName, args > Sent when the user does a "vim action," being something
-like yanking or pasting text. See `doc vim-mode actions` for more info.
+## hilbish.cd
+Sent when the current directory of the shell is changed (via interactive means.)
+If you are implementing a custom command that changes the directory of the shell,
+you must throw this hook manually for correctness.
+
+#### Variables
+`string` **`path`**  
+Absolute path of the directory that was changed to.
+
+`string` **`oldPath`**  
+Absolute path of the directory Hilbish *was* in.
+
+<hr>
+
+## hilbish.vimAction
+Sent when the user does a "vim action," being something like yanking or pasting text.
+See `doc vim-mode actions` for more info.
+
+#### Variables
+`string` **`actionName`**  
+Absolute path of the directory that was changed to.
+
+`table` **`args`**  
+Table of args relating to the Vim action.
+
+<hr>