trying to fix markdown issue (#216)

* trying to fix markdown issue

* trying to fix markdown issue

roles/aap_setup_prepare/README.md

@@ -15,7 +15,7 @@ The following input variables are available:
 |Variable Name|Default Value|Required|Description|Example|
 |---:|:---:|:---:|:---|:---:|
 |`aap_setup_prep_installer_file`|"`{{ aap_setup_down_installer_file }}`"|no|absolute path where to find the tarball on the remote host, or URL http(s), note that `aap_setup_down_installer_file` is a fact set by the role `aap_setup_download`|`'https://myhost/myinstaller.tar.gz'` or `'/var/tmp/myinstaller.tar.gz'`|
-|`aap_setup_prep_working_dir`|"`{{ aap_setup_working_dir | default('/var/tmp') }}`"|no|absolute path to a working directory, note that `aap_setup_working_dir` is used by other roles in the collection|'/srv/workdir'|
+|`aap_setup_prep_working_dir`|"`{{ aap_setup_working_dir \| default('/var/tmp') }}`"|no|absolute path to a working directory, note that `aap_setup_working_dir` is used by other roles in the collection|'/srv/workdir'|
 |`aap_setup_prep_process_template`|true|no|shall the inventory be generated by the role?|false|
 |`aap_setup_prep_inv_nodes`|none|yes|a dictionary of dictionaries, the first level key is the inventory group name, the 2nd level key is the hostname with the value being its inventory host variables in INI-format|see [defaults/main.yml](defaults/main.yml)|
 |`aap_setup_prep_inv_vars`|{}|see below|a dictionary of dictionaries, the first level key is the inventory group name, the 2nd level key is the variable name with the value being the variable's value|see [defaults/main.yml](defaults/main.yml)|