Fix syntax.

Author: kannanjgithub

android-interop-testing/src/main/AndroidManifest.xml

@@ -6,8 +6,7 @@
     <!-- For UDS -->
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
     <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-sdk tools:overrideLibrary="io.grpc.android"/>
-    <uses-sdk android:minSdkVersion="21"/>
+    <uses-sdk tools:overrideLibrary="io.grpc.android" android:minSdkVersion="21"/>
 
     <application
         android:allowBackup="true"