i18n: fix typos found during l10n for git 2.34.0

Emir and Jean-Noël reported typos in some i18n messages when preparing
l10n for git 2.34.0.

* Fix unstable spelling of config variable "gpg.ssh.defaultKeyCommand"
  which was introduced in commit fd9e226776 (ssh signing: retrieve a
  default key from ssh-agent, 2021-09-10).

* Add missing space between "with" and "--python" which was introduced
  in commit bd0708c7eb (ref-filter: add %(raw) atom, 2021-07-26).

* Fix unmatched single quote in 'builtin/index-pack.c' which was
  introduced in commit 8737dab346 (index-pack: refactor renaming in
  final(), 2021-09-09)

[1] https://github.com/git-l10n/git-po/pull/567

Reported-by: Emir Sarı <bitigchi@me.com>
Reported-by: Jean-Noël Avila <jn.avila@free.fr>
Signed-off-by: Jiang Xin <worldhello.net@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/index-pack.c

@@ -1486,7 +1486,7 @@ static void rename_tmp_packfile(const char **final_name,
 		if (!*final_name)
 			*final_name = odb_pack_name(name, hash, ext);
 		if (finalize_object_file(curr_name, *final_name))
-			die(_("unable to rename temporary '*.%s' file to '%s"),
+			die(_("unable to rename temporary '*.%s' file to '%s'"),
 			    ext, *final_name);
 	} else if (make_read_only_if_same) {
 		chmod(*final_name, 0444);

gpg-interface.c

@@ -775,7 +775,7 @@ static const char *get_default_ssh_signing_key(void)
 		if (keys[0] && starts_with(keys[0]->buf, "ssh-")) {
 			default_key = strbuf_detach(keys[0], NULL);
 		} else {
-			warning(_("gpg.ssh.defaultKeycommand succeeded but returned no keys: %s %s"),
+			warning(_("gpg.ssh.defaultKeyCommand succeeded but returned no keys: %s %s"),
 				key_stderr.buf, key_stdout.buf);
 		}
 

ref-filter.c

@@ -1037,7 +1037,7 @@ int verify_ref_format(struct ref_format *format)
 		     format->quote_style == QUOTE_TCL) &&
 		     used_atom[at].atom_type == ATOM_RAW &&
 		     used_atom[at].u.raw_data.option == RAW_BARE)
-			die(_("--format=%.*s cannot be used with"
+			die(_("--format=%.*s cannot be used with "
 			      "--python, --shell, --tcl"), (int)(ep - sp - 2), sp + 2);
 		cp = ep + 1;