fixup: add missing integer-suffix

Author: jensmaurer

source/support.tex

@@ -664,7 +664,7 @@
 #define @\defnlibxname{cpp_lib_fstream_native_handle}@             202306L // also in \libheader{fstream}
 #define @\defnlibxname{cpp_lib_function_ref}@                      202306L // also in \libheader{functional}
 #define @\defnlibxname{cpp_lib_gcd_lcm}@                           201606L // also in \libheader{numeric}
-#define @\defnlibxname{cpp_lib_generate_random}@                   202403  // also in \libheader{random}
+#define @\defnlibxname{cpp_lib_generate_random}@                   202403L // also in \libheader{random}
 #define @\defnlibxname{cpp_lib_generator}@                         202207L // also in \libheader{generator}
 #define @\defnlibxname{cpp_lib_generic_associative_lookup}@        201304L // also in \libheader{map}, \libheader{set}
 #define @\defnlibxname{cpp_lib_generic_unordered_lookup}@          201811L