[FIX] extensions: icon_role fa icons

closes odoo/documentation#9243

Signed-off-by: Samuel Lieber (sali) <sali@odoo.com>

extensions/odoo_theme/__init__.py

@@ -121,6 +121,6 @@ def icon_role(name, rawtext, text, lineno, inliner, options=None, content=None):
             )
             error_node = inliner.problematic(rawtext, rawtext, report_error)
             return [error_node], [report_error]
-    icon_html = f'<i class="{text}"></i>'
+    icon_html = f'<i class="fa {text}"></i>'
     node = nodes.raw('', icon_html, format='html')
     return [node], []

extensions/odoo_theme/static/scss/_font_awesome.scss

@@ -4,7 +4,7 @@
  */
 /* FONT PATH
  * -------------------------- */
-[class*="fa-"] {
+.fa {
   display: inline-block;
   font: normal normal normal 14px/1 FontAwesome;
   font-size: inherit;