docs(README):Add the execution_allowed to the online generator URL

Author: guo-yong-zhi

README.md

@@ -10,7 +10,7 @@ Word cloud (tag cloud or wordle) is a novelty visual representation of text data
 
 [✨ Go to the gallery ✨](https://github.com/guo-yong-zhi/WordCloud-Gallery/blob/main/README.md) 
 
-[🌐 Try the online generator 🌐](https://mybinder.org/v2/gh/guo-yong-zhi/pluto-on-binder/master?urlpath=pluto/open?url=https%3A%2F%2Fraw.githubusercontent.com%2Fguo-yong-zhi%2FWordCloud.jl%2Fmaster%2FWordCloudApp.jl) (a bit slow)
+[🌐 Try the online generator 🌐](https://mybinder.org/v2/gh/guo-yong-zhi/pluto-on-binder/master?urlpath=pluto/open?url=https%3A%2F%2Fraw.githubusercontent.com%2Fguo-yong-zhi%2FWordCloud.jl%2Fmaster%2FWordCloudApp.jl&execution_allowed=true) (a bit slow)
 
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