[#15157][Rust][Doc] Fix lint error: The above files are missing a trailing newline or have too many trailing newlines

Author: cchung100m

docs/reference/api/links.rst

@@ -24,4 +24,4 @@ build system.
 * `C++ doyxgen API <doxygen/index.html>`_
 * `Typescript typedoc API <typedoc/index.html>`_
 * `Java Javadoc API <javadoc/index.html>`_
-* `Rust Rustdoc API <rust/index.html>`_
+* `Rust Rustdoc API <rust/index.html>`_