Removed trailing space.

Author: JonEckenrode

ext/junit/CHANGELOG.md

@@ -7,7 +7,7 @@ are released.
 
 **Bug Fixes**
 
-Fixed link to the deprecated `androidx.test.rule.ActivityTestRule` in class 
+Fixed link to the deprecated `androidx.test.rule.ActivityTestRule` in class
 description.
 
 **New Features**