Update default Doxygen version to 1.16.1 in README

README.md

diff --git a/README.md b/README.md
index ce83ecb..2dfcc03 100644
--- a/README.md
+++ b/README.md
@@ -44,7 +44,7 @@
 use_repo(doxygen_extension, "doxygen")
 ```
 
-The extension will create a default configuration for all platforms with the version `1.15.0` of Doxygen.
+The extension will create a default configuration for all platforms with the version `1.16.1` of Doxygen.
 You can override this value with a custom one for each supported platform, i.e. _windows_, _mac_, _mac-arm_, _linux_ and _linux-arm_.
 
 ```bzl