Update README.md

Author: 陽炎

README.md

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 Scripts for Quote bot, including the launcher.
 
 [![Quote Linux Launcher](https://cdn.discordapp.com/attachments/747227717698715850/749210874539147345/unknown.png)](https://cdn.discordapp.com/attachments/747227717698715850/749210874539147345/unknown.png)
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+## Found an error?
+
+Have you found a bug in the launcher's code, or the dependency script's code?
+
+Check out the [Contributing Guide](https://github.com/Quote-Bot/Quote-Scripts/blob/master/CONTRIBUTING.md).