fixes to get hero working

docs/hero_create_mdbook.md

@@ -94,7 +94,7 @@ Hero uses three main directories to build an mdbook `books`, `collections` and `
     - `context.md` sets the proper configuration for the mdbook using the command `configure`
       - This file is the same throughout all the `info_tfgrid` repository.
         ```
-        !!books.configure
+        \!!books.configure
             buildroot:'~/hero/var/mdbuild'
             publishroot:'~/hero/www/info'
             install:true
@@ -107,11 +107,11 @@ Hero uses three main directories to build an mdbook `books`, `collections` and `
       - It also point the URLs where the markdown files are located 
         - In the directory `collections` as we've seen above
       ```
-      !!book.generate name:'new_mdbook' title:'New mdbook'
+      \!!book.generate name:'new_mdbook' title:'New mdbook'
               url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/heroscript/new_mdbook'
 
 
-      !!doctree.add
+      \!!doctree.add
           url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/collections/new_mdbook'
 
       ```

docs/hero_mdbook_fullvm.md

@@ -163,7 +163,7 @@ There are some distinctions between mdbook and hero mdbook. This is subject to c
 - hero mdbook cannot use parentheses in tables of contents (e.g. in SUMMARY.md)
 - hero mdbook uses the following include template:
     ```
-    !!wiki.include page:'collection_name:file_name.md'
+    \!!wiki.include page:'collection_name:file_name.md'
     ```
 - hero mdbook cannot parse codes with tabs or spaces
 - list contents are parsed as paragraphs (e.g. defs, comments, text, links), they can't contain code blocks