[FIX] web_widget_text_markdown : use lexer on text field only (#942)

Fixes #937

web_widget_text_markdown/static/src/js/web_widget_text_markdown.js

@@ -14,8 +14,7 @@ odoo.define("web_widget_text_markdown.bootstrap_markdown",
     var list_widget_registry = core.list_widget_registry;
 
     var FieldTextMarkDown = form_common.AbstractField.extend(
-        form_common.ReinitializeFieldMixin,
-        {
+      form_common.ReinitializeFieldMixin, {
 
         template: 'FieldMarkDown',
         display_name: _lt('MarkDown'),
@@ -70,8 +69,9 @@ odoo.define("web_widget_text_markdown.bootstrap_markdown",
         },
 
         _get_raw_value: function() {
-                if (this.$txt === false)
+          if (this.$txt === false) {
             return '';
+          }
           return this.$txt.val();
         },
 
@@ -121,6 +121,7 @@ odoo.define("web_widget_text_markdown.bootstrap_markdown",
       },
 
       _format: function(row_data, options) {
+        if (this.type === "text") {
           options = options || {};
           var markdown_text = marked(
             formats.format_value(
@@ -129,6 +130,8 @@ odoo.define("web_widget_text_markdown.bootstrap_markdown",
           );
           return markdown_text;
         }
+        return this._super(row_data, options)
+      }
     });
 
     list_widget_registry.add('field.bootstrap_markdown', ListView.Column);