fix: put the pgvector patch's Upstream-Status comment on one line

check_patch.py only reads the first line after "Upstream-Status:"
(the regex uses MULTILINE, not DOTALL), so the wrapped two-line
`Inappropriate [...]` bracket comment in
0002-Do-not-pass-march-native-to-the-pgvector-build.patch failed the
check_patches CI job. Collapse it to one line; no functional change.

Author: luhenry

patches/pgserver/0.1.4/0002-Do-not-pass-march-native-to-the-pgvector-build.patch

@@ -21,9 +21,7 @@ that reject -march=native. pgvector still gets the auto-vectorization
 flags (-ftree-vectorize etc.) at the baseline rv64gc ISA; only the
 native/RVV-specific tuning is dropped.
 
-Upstream-Status: Inappropriate [riscv64/CI-infra-specific override of
-a downstream build script; pgvector's own -march=native default is
-correct for every architecture it targets]
+Upstream-Status: Inappropriate [riscv64/CI-infra-specific override of a downstream build script; pgvector's own -march=native default is correct for every architecture it targets]
 ---
  pgbuild/Makefile | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)