fix(remove_md_links.lua): also remove md links with anchor

Author: cebarobot

pandoc_filters/remove_md_links.lua

@@ -1,5 +1,5 @@
 function Link(el)
-    if string.match(el.target, "%.md$") then
+    if string.match(el.target, "%.md$") or string.match(el.target, "%.md#") then
         return el.content
     else
         return el