Add generated example

README.md

@@ -21,6 +21,9 @@ widget:
 - text: a boy snowboarding. in the style of TOK
   output:
     url: images/example_0s2fzx9kd.png
+- text: a man tennis player playing tennis on tennis court. in the style of TOK
+  output:
+    url: images/example_u2i3ke60c.png
 
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