Update README.md
fix Images links
<h1 align="center">
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- <img src="https://docs.streampipes.org/img/logo.png"
+ <img src="https://streampipes.apache.org/img/sp-logo-color.png"
alt="StreamPipes Logo" title="StreamPipes Logo" width="50%"/>
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</h1>
<h3 align="center">Self-Service Data Analytics for the (Industrial) IoT</h3>
<h4 align="center">StreamPipes is a complete toolbox to easily analyze IoT (big) data streams without programming skills.</h4>
<p align="center">
- <img src="https://www.streampipes.org/images/screenshot.png" alt="StreamPipes Pipeline Editor"/>
+ <img src="https://streampipes.apache.org/img/streampipes-screenshot.png" alt="StreamPipes Pipeline Editor"/>
</p>
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