chore(markup): added deprecated comment for insertAnchor command (#542)

Author: makhnatkin

src/markup/commands/inline.ts

@@ -13,7 +13,9 @@ export const insertLink: StateCommand = ({state, dispatch}) => {
     return true;
 };
 
+// [major] TODO: remove insertAnchor
 const defaultAnchorSnippet = snippet(`#[#{2:text}](#{1:anchor} "#{3:title}")`);
+/** @deprecated */
 export const insertAnchor: StateCommand = ({state, dispatch}) => {
     const {from, to, empty} = state.selection.main;
     const anchorSnippet = empty