docs: Fix pre-release version badge

Author: CrawlerCode

README.md

@@ -5,7 +5,7 @@
 ![License](https://img.shields.io/github/license/CrawlerCode/redmine-time-tracking?logo=github)
 [![Semantic-Release](https://img.shields.io/badge/semantic--release-conventional%20commits-e10079?logo=semantic-release)](https://github.com/semantic-release/semantic-release)
 ![Release Version](https://img.shields.io/github/v/release/CrawlerCode/redmine-time-tracking?logo=github)
-![Pre-Release Version](https://img.shields.io/github/v/release/CrawlerCode/redmine-time-tracking?include_prereleases&logo=github&label=pre-release)
+![Pre-Release Version](https://img.shields.io/github/v/release/CrawlerCode/redmine-time-tracking?include_prereleases&filter=*-beta.*&logo=github&label=pre-release)
 
 ![Chrome Web Store Version](https://img.shields.io/chrome-web-store/v/ldcanhhkffokndenejhafhlkapflgcjg?logo=google-chrome&logoColor=white)
 ![Chrome Web Store Users](https://img.shields.io/chrome-web-store/users/ldcanhhkffokndenejhafhlkapflgcjg?logo=google-chrome&logoColor=white)