Fix extension for uncompressed APKs.

PiperOrigin-RevId: 232882764

src/tools/android/java/com/google/devtools/build/android/aapt2/ResourceLinker.java

diff --git a/src/tools/android/java/com/google/devtools/build/android/aapt2/ResourceLinker.java b/src/tools/android/java/com/google/devtools/build/android/aapt2/ResourceLinker.java
index 7b9c3f8..345340a 100644
--- a/src/tools/android/java/com/google/devtools/build/android/aapt2/ResourceLinker.java
+++ b/src/tools/android/java/com/google/devtools/build/android/aapt2/ResourceLinker.java
@@ -406,7 +406,7 @@
                         : IS_FLAT_FILE.and(USE_DEFAULT)),
                 workingDirectory)
             // Never compress apks.
-            .add("-0", "apk")
+            .add("-0", ".apk")
             // Add custom no-compress extensions.
             .addRepeated("-0", uncompressedExtensions)
             // Filter by resource configuration type.