doc/release-notes: fix spelling mistake

doc/release-notes/rl-2505.section.md

···
 - `squid` has been updated to version 7, this release includes multiple breaking changes, like ESI removal.
   For more information, [check the release notes](https://github.com/squid-cache/squid/releases/tag/SQUID_7_0_1).
 
-- `postgresql` and `libpq` don't provide `pg_config` by default anymore. Instead, `pg_config` is available via `postgresql.pg_config` or `libpq.pg_config`. This allowed implementing it as a shell script, which can be build for both the build and host systems when cross-compiling. If your build fails to find `pg_config`, add `postgresql.pg_config` or `libpq.pg_config` to `nativeBuildInputs`.
+- `postgresql` and `libpq` don't provide `pg_config` by default anymore. Instead, `pg_config` is available via `postgresql.pg_config` or `libpq.pg_config`. This allowed implementing it as a shell script, which can be built for both the build and host systems when cross-compiling. If your build fails to find `pg_config`, add `postgresql.pg_config` or `libpq.pg_config` to `nativeBuildInputs`.
 
 - The [`no-broken-symlinks` hook](https://nixos.org/manual/nixpkgs/unstable/#no-broken-symlinks.sh) was added to catch builds containing dangling or reflexive symlinks, as these are indicative of problems with packaging.
   The hook can be disabled by providing `dontCheckForBrokenSymlinks = true;` as an argument to `mkDerivation`.