run codespell pre-commit hook on staged files only

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
Reviewed-by: Neil Horman <nhorman@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/29360)

(cherry picked from commit d70b22bf2d)

.pre-commit-config.yaml

@@ -3,7 +3,7 @@ repos:
     rev: "v2.4.1"
     hooks:
       - id: "codespell"
-        args: ["--config=.codespellrc", "."]
+        args: ["--config=.codespellrc"]
   - repo: "https://github.com/pre-commit/mirrors-clang-format"
     rev: "v21.1.6"
     hooks: