shorten description for feed readers category

- https://github.com/awesome-selfhosted/awesome-selfhosted/issues/2984

README.md

@@ -843,7 +843,7 @@ _Related: [Community-Supported Agriculture (CSA)](#community-supported-agricultu
 
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-A [news aggregator](https://en.wikipedia.org/wiki/News_aggregator), also termed a feed aggregator, feed reader, news reader, [RSS](https://en.wikipedia.org/wiki/RSS) reader or simply an aggregator, is client software or a web application that aggregates syndicated web content such as online newspapers, blogs/vlogs, podcasts, and other updates in one location for easy viewing. This also section includes RSS/Atom automation tools.
+A [news aggregator](https://en.wikipedia.org/wiki/News_aggregator), also termed a feed aggregator, feed reader, news reader, [RSS](https://en.wikipedia.org/wiki/RSS) reader, is an application that aggregates web content such as newspapers/blogs/vlogs/podcasts in one location for easy viewing.
 
 - [Bubo Reader](https://github.com/georgemandis/bubo-rss) - Open source, "irrationally minimal" RSS feed reader. ([Demo](https://bubo-rss-demo.netlify.app/)) `MIT` `Nodejs`
 - [CommaFeed](https://www.commafeed.com/) - Google Reader inspired self-hosted RSS reader. ([Source Code](https://github.com/Athou/commafeed)) `Apache-2.0` `Java`