Update some examples

Author: javiereguiluz

string.rst

@@ -649,14 +649,20 @@ actual emoji thanks to the :ref:`emojify filter <reference-twig-filter-emojify>`
 
 .. code-block:: twig
 
-    {{ ':green-heart:|emojify }}           {# renders: 💚 #}
-    {{ ':green_salad:'|emojify('slack') }} {# renders: 🥗 #}
-    {{ ':turtle:'|emojify('github') }}     {# renders: 🐢 #}
-    {{ ':kiwi:'|emojify('gitlab') }}       {# renders: 🥝 #}
+    {{ 'I :green-heart: this'|emojify }}                  {# renders: I 💚 this #}
+    {{ ':green_salad: is nice'|emojify('slack') }}        {# renders: 🥗 is nice #}
+    {{ 'My :turtle: has no name yet'|emojify('github') }} {# renders: My 🐢 has no name yet #}
+    {{ ':kiwi: is a great fruit'|emojify('gitlab') }}     {# renders: 🥝 is a great fruit #}
 
     {{ 'My :turtle: loves to eat :green_salad:'|emojify('slack') }}
     {# renders: My 🐢 loves to eat 🥗 #}
 
+    {# if you are not sure about how the emojis were transliterated, you can
+       use the 'text' catalog, which merges Slack, GitHub and GitLab text codes #}
+    {{ 'I like :kiwi-fruit:'|emojify('text') }} {# renders: I like 🥝 #}
+    {{ 'I like :kiwi:'|emojify('text') }}       {# renders: I like 🥝 #}
+    {{ 'I like :kiwifruit:'|emojify('text') }}  {# renders: I like 🥝 #}
+
 Removing Emojis
 ~~~~~~~~~~~~~~~