Fixed typo in build.gradle

(cherry picked from commit fe024b8fe32312f29e53975de0c4fb103cbc6a6d)

android-project/app/build.gradle

@@ -5,7 +5,7 @@ plugins {
 def buildWithCMake = project.hasProperty('BUILD_WITH_CMAKE');
 
 android {
-    namespace = "org.libsdl.testsprite2"
+    namespace = "org.libsdl.app"
     compileSdkVersion 35
     defaultConfig {
         minSdkVersion 21