Fix a typo in the function name
X509_STORE_load_locations_ex() calls X509_STORE_load_file_ex() and X509_STORE_load_path(), there's no such function name as X509_STORE_load_dir().
CLA: trivial
@@ -115,7 +115,7 @@ X509_STORE_load_store() is similar to X509_STORE_load_store_ex() but
uses NULL for the library context I<libctx> and property query I<propq>.
X509_STORE_load_locations_ex() combines
-X509_STORE_load_file_ex() and X509_STORE_load_dir() for a given file
+X509_STORE_load_file_ex() and X509_STORE_load_path() for a given file
and/or directory path.
It is permitted to specify just a file, just a directory, or both
paths.
