[FIX] html_editor: link popover icon size fix

Author: dabo-odoo

addons/html_editor/static/src/main/link/link_popover.scss

@@ -1,6 +1,13 @@
-.o_we_preview_favicon .o_image {
-    max-width: 100%;
-    max-height: 100%;
-    background-position: top;
-    margin-top: 0.3em
+.o_we_preview_favicon {
+    .o_image {
+        max-width: 100%;
+        max-height: 100%;
+        background-position: top;
+        margin-top: 0.3em;
+    }
+
+    > img {
+        max-height: 16px;
+        max-width: 16px;
+    }
 }