pw_tokenizer: Add Java to supported languages list

Change-Id: Idb8c5f60af4b9ba0e8d1d1a8e3f9889baa26fa26
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/179251
Commit-Queue: Kayce Basques <kayce@google.com>
Pigweed-Auto-Submit: Keir Mierle <keir@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Kayce Basques <kayce@google.com>
diff --git a/pw_tokenizer/docs.rst b/pw_tokenizer/docs.rst
index f9e4f3a..01d619a 100644
--- a/pw_tokenizer/docs.rst
+++ b/pw_tokenizer/docs.rst
@@ -7,8 +7,8 @@
    :name: pw_tokenizer
    :tagline: Compress strings to shrink logs by +75%
    :status: stable
-   :languages: C11, Python, Rust, TypeScript
-   :code-size-impact: 50% reduction in binary log size
+   :languages: C++, C11, Python, Rust, TypeScript, Java
+   :code-size-impact: 50% reduction in log size
 
 Logging is critical, but developers are often forced to choose between
 additional logging or saving crucial flash space. The ``pw_tokenizer`` module