[ruby/openssl] [DOC] better wording for OpenSSL::Config document.

https://github.com/ruby/openssl/commit/26370636f3

Co-authored-by: Olle Jonsson <olle.jonsson@gmail.com>

ext/openssl/ossl_config.c

@@ -305,7 +305,7 @@ static IMPLEMENT_LHASH_DOALL_ARG_FN(dump_conf_value, CONF_VALUE, VALUE)
  *
  * Gets the parsable form of the current configuration.
  *
- * Given the following configurating file being loaded:
+ * Given the following configuration file being loaded:
  *
  *   config = OpenSSL::Config.load('baz.cnf')
  *     #=> #<OpenSSL::Config sections=["default"]>