Fix doc-nits

Remove a space from a whitespace-only line.

Reviewed-by: Rich Salz <rsalz@openssl.org>
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5575)
diff --git a/doc/man3/OSSL_STORE_expect.pod b/doc/man3/OSSL_STORE_expect.pod
index ab0e878..e3f06b5 100644
--- a/doc/man3/OSSL_STORE_expect.pod
+++ b/doc/man3/OSSL_STORE_expect.pod
@@ -14,7 +14,7 @@
  int OSSL_STORE_expect(OSSL_STORE_CTX *ctx, int expected_type);
 
  int OSSL_STORE_supports_search(OSSL_STORE_CTX *ctx, int criterion_type);
- 
+
  int OSSL_STORE_find(OSSL_STORE_CTX *ctx, OSSL_STORE_SEARCH *search);
 
 =head1 DESCRIPTION