Add another example

Author: javiereguiluz

string.rst

@@ -624,6 +624,9 @@ actual emoji thanks to the :ref:`emojify filter <reference-twig-filter-emojify>`
     {{ ':turtle:'|emojify('github') }}     {# renders: 🐢 #}
     {{ ':kiwi:'|emojify('gitlab') }}       {# renders: 🥝 #}
 
+    {{ 'My :turtle: loves to eat :green_salad:'|emojify('slack') }}
+    {# renders: My 🐢 loves to eat 🥗 #}
+
 Removing Emojis
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