docs: fix junit example link (#177)

Fix broken link to example output file.

Author: martincostello

src/JUnit.Xml.Package/README.md

@@ -14,7 +14,7 @@ If you're looking for `Nunit` or `Xunit` loggers, please see <https://github.com
 
 ## Usage
 
-The JUnit Test Logger generates xml reports in the [Ant Junit Format](https://github.com/windyroad/JUnit-Schema), which the JUnit 5 repository refers to as the de-facto standard. While the generated xml complies with that schema, it does not contain values in every case. For example, the logger currently does not log any `properties`. Please [refer to a sample file](https://github.com/spekt/testlogger/docs/assets/TestResults.xml) to see an example. If you find that the format is missing data required by your CI/CD system, please open an issue or PR.
+The JUnit Test Logger generates xml reports in the [Ant Junit Format](https://github.com/windyroad/JUnit-Schema), which the JUnit 5 repository refers to as the de-facto standard. While the generated xml complies with that schema, it does not contain values in every case. For example, the logger currently does not log any `properties`. Please [refer to a sample file](https://github.com/spekt/testlogger/blob/master/docs/assets/TestResults.xml) to see an example. If you find that the format is missing data required by your CI/CD system, please open an issue or PR.
 
 To use the logger, follow these steps: