Switch to a unicorn image that we know is free for commercial use.

* Source: https://pixabay.com/en/unicorn-galaxy-unicorn-galaxy-star-2007257/

plugins/discourse-narrative-bot/config/locales/server.de.yml

@@ -165,7 +165,7 @@ de:
         instructions: |-
           Hier ist ein Bild von einem Einhorn:
 
-          <img src="/images/unicorn.jpg" width="520" height="381">
+          <img src="/images/unicorn.png" width="520" height="520">
 
           Wenn du es magst (und wer tut das nicht!), leg los und drücke die Like-Schaltfläche :heart: unter diesem Beitrag, um es mich wissen zu lassen.
 

plugins/discourse-narrative-bot/config/locales/server.en.yml

@@ -180,7 +180,7 @@ en:
         instructions: |-
           Here’s a picture of a unicorn:
 
-          <img src="/images/unicorn.jpg" width="520" height="381">
+          <img src="/images/unicorn.png" width="520" height="520">
 
           If you like it (and who wouldn’t!) go ahead and press the like :heart: button below this post to let me know.
 

plugins/discourse-narrative-bot/config/locales/server.es.yml

@@ -174,7 +174,7 @@ es:
         instructions: |-
           Aquí hay una imagen de un unicornio:
 
-          <img src="/images/unicorn.jpg" width="520" height="381">
+          <img src="/images/unicorn.png" width="520" height="520">
 
           Si te gusta (a quién no!) por favor presiona sobre el botón :heart: "me gusta" que está debajo del post para hacerme saber que te gusta.
 

plugins/discourse-narrative-bot/config/locales/server.fi.yml

@@ -179,7 +179,7 @@ fi:
         instructions: |-
           Tämä on kuva yksisarvisesta:
 
-          <img src="/images/unicorn.jpg" width="520" height="381">
+          <img src="/images/unicorn.png" width="520" height="520">
 
           Jos pidit siitä (kukapa ei pitäisi!), kerro siitä minulle painamalla tykkää-nappia :heart: tämän viestin alla.
 

plugins/discourse-narrative-bot/config/locales/server.it.yml

@@ -173,7 +173,7 @@ it:
         instructions: |-
           Ecco l'immagine di un unicorno:
 
-          <img src="/images/unicorn.jpg" width="520" height="381">
+          <img src="/images/unicorn.png" width="520" height="520">
 
           Se ti piace (e a chi non piacerebbe!) vai avanti e premi il pulsante mi piace :heart: sotto questo messaggio per farmelo sapere.