Add missing r25 changelog note for shaderc fix.

Bug: android/ndk#1634
Test: N/A
Change-Id: Iae728c946cda17e6afb3457038aac60443b6fbf1

docs/changelogs/Changelog-r25.md

@@ -20,11 +20,13 @@ directly, see the [build system maintainers guide].
 * Strip some binaries and libraries. This reduces the uncompressed size of
   the NDK by 300 MB.
 * Remove python2. All scripts now use python3.
+* [Issue 1634]: Fixed the build rule for the libshaderc_combined target.
 * [Issue 1693]: The NDK's toolchain file for CMake (`android.toolchain.cmake`)
   defaults to the legacy toolchain file for all versions of CMake. The new
   toolchain file can still be enabled using
   `-DANDROID_USE_LEGACY_TOOLCHAIN_FILE=OFF`.
 
+[Issue 1634]: https://github.com/android/ndk/issues/1634
 [Issue 1693]: https://github.com/android/ndk/issues/1693
 
 ## Known Issues