riscv: Fix a typo in config/riscv/freebsd.h [PR119678]

The r15-1124 commit had a typo in one of the FBSD_LINK_PG_NOTE
macro uses.

Fixed thusly, tested with
../configure --target riscv64-unknown-freebsd14 --disable-bootstrap --enable-languages=c --disable-libsanitizer --disable-libgomp
make -j32
Before it failed while compiling gcc.cc:
In file included from ./tm.h:44,
                 from ../../gcc/gcc.cc:35:
../../gcc/config/riscv/freebsd.h:45:5: error: expected ‘,’ or ‘;’ before ‘FBSD_LINK_PG_NOTES’
   45 |   " FBSD_LINK_PG_NOTES "                                                \
      |     ^~~~~~~~~~~~~~~~~~
../../gcc/gcc.cc:1211:32: note: in expansion of macro ‘LINK_SPEC’
Now it fails later on during libgcc configury because I don't have
corresponding binutils.

2025-04-08  Jakub Jelinek  <jakub@redhat.com>

	PR target/119678
	* config/riscv/freebsd.h (LINK_SPEC): Use FBSD_LINK_PG_NOTE rather
	than non-existing FBSD_LINK_PG_NOTES.

gcc/config/riscv/freebsd.h

@@ -42,7 +42,7 @@ along with GCC; see the file COPYING3.  If not see
 #define LINK_SPEC "						\
   -melf" XLEN_SPEC DEFAULT_ENDIAN_SPEC "riscv			\
   %{p:%nconsider using `-pg' instead of `-p' with gprof (1)}	\
-  " FBSD_LINK_PG_NOTES "						\
+  " FBSD_LINK_PG_NOTE "						\
   %{v:-V}							\
   %{assert*} %{R*} %{rpath*} %{defsym*}				\
   -X								\