Fix a typo in hex digit conversion

This only affects error message formatting, but still, let's fix it.

Bug: N/A
Test: N/A
Change-Id: I9de32a8b333f4053b2f80b4fcf0abf4966c8790d
diff --git a/src/main/java/com/android/apksig/internal/apk/ApkSigningBlockUtils.java b/src/main/java/com/android/apksig/internal/apk/ApkSigningBlockUtils.java
index cfa9844..7c13586 100644
--- a/src/main/java/com/android/apksig/internal/apk/ApkSigningBlockUtils.java
+++ b/src/main/java/com/android/apksig/internal/apk/ApkSigningBlockUtils.java
@@ -71,7 +71,7 @@
 
 public class ApkSigningBlockUtils {
 
-    private static final char[] HEX_DIGITS = "01234567890abcdef".toCharArray();
+    private static final char[] HEX_DIGITS = "0123456789abcdef".toCharArray();
     private static final long CONTENT_DIGESTED_CHUNK_MAX_SIZE_BYTES = 1024 * 1024;
     public static final int ANDROID_COMMON_PAGE_ALIGNMENT_BYTES = 4096;
     public static final byte[] APK_SIGNING_BLOCK_MAGIC =